diff --git a/.flowconfig b/.flowconfig
index a8b7131..2f63d21 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -5,5 +5,10 @@
 pb.js
 
 [libs]
+misc/flow.js
 
 [options]
+module.file_ext=.js
+module.file_ext=.njs
+module.ignore_non_literal_requires=true
+suppress_comment= \\(.\\|\n\\)*\\$FlowIgnore
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..9b1a69d
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,10 @@
+misc/
+node_modules
+*.tgz
+.gitignore
+.eslintrc
+.jshintrc
+Makefile
+.npmignore
+.jscs.json
+.flowconfig
diff --git a/LICENSE b/LICENSE
index 9b778e0..56697e6 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (C) 2013-2015   SheetJS
+Copyright (C) 2013-present  SheetJS
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/README.md b/README.md
index c88bea5..6af9db5 100644
--- a/README.md
+++ b/README.md
@@ -10,31 +10,43 @@ provide a more convenient way to access the pasteboard from node.
 
 With [npm](https://www.npmjs.org/package/pb), global installation is easiest:
 
-    $ npm install -g pb
+```bash
+$ npm install -g pb
+```
 
 Depending on your system configuration, you may need to run as root:
 
-    $ sudo npm install -g pb
+```bash
+$ sudo npm install -g pb
+```
 
 ## Command-Line Tool Usage
 
 To get data from a specific pasteboard:
 
-    $ pb [type]
-    $ pb -m <type>
+```bash
+$ pb [type]
+$ pb -m <type>
+```
 
 To set a specific pasteboard, be sure to pipe data into pb:
 
-    $ get_data | pb -s [type]
+```bash
+$ get_data | pb -s [type]
+```
 
 To list available pasteboards:
 
-    $ pb -l
+```bash
+$ pb -l
+```
 
 For example, to grab the contents of the HTML pasteboard and put it on the
 plaintext pasteboard:
 
-    $ pb -m html | pb -s
+```bash
+$ pb -m html | pb -s
+```
 
 ## Library Usage
 
@@ -42,12 +54,13 @@ From node, `pb` exposes:
 
 - `get(type)`: get pasteboard data from specified pasteboard
 - `set(type, data)`: set pasteboard data (overwrites other pasteboards)
+- `available()`: enumerate populated pasteboards
 - `gettypes()`: enumerate available pasteboards
 
 For example, to grab the contents of the HTML pasteboard and put it on the
 plaintext pasteboard:
 
-```
+```js
 var pb = require('pb');
 var HTMLOutput = pb.get('html');
 var textOutput = pb.get();
diff --git a/bin/pboard.njs b/bin/pboard.njs
index d6d3136..800e89b 100755
--- a/bin/pboard.njs
+++ b/bin/pboard.njs
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-/* pb.js (C) 2013-2015 SheetJS -- http://sheetjs.com */
+/* pb.js (C) 2013-present  SheetJS -- http://sheetjs.com */
 var n = "pb";
 /* vim: set ts=2 ft=javascript: */
 var X = require('../');
@@ -20,7 +20,7 @@ program.parse(process.argv);
 var type = program.mode || program.args[0] || 'text';
 if(!X.mytype(type)[0]) throw new Error("Unsupported type " + type);
 
-if(program.listModes) { console.log(X.gettypes().join("\n")); return; }
+if(program.listModes) { console.log(X.gettypes().join("\n")); process.exit(0); }
 if(program.set) {
 	var data = "";
 	process.stdin.on('data', function(d) { data += d; });
diff --git a/misc/flow.js b/misc/flow.js
new file mode 100644
index 0000000..54ac8ce
--- /dev/null
+++ b/misc/flow.js
@@ -0,0 +1,3 @@
+/*::
+declare module 'nodobjc' { declare var exports:any; }
+*/
diff --git a/package.json b/package.json
index a139414..e1e3c98 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pb",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "author": "SheetJS",
   "description": "Interface to OSX Pasteboard",
   "keywords": [ "osx", "mac", "pasteboard", "clipboard" ],
diff --git a/pb.js b/pb.js
index 03970f8..9bbd3b4 100644
--- a/pb.js
+++ b/pb.js
@@ -1,34 +1,35 @@
-/* pb.js -- (C) 2013-2015 SheetJS -- http://sheetjs.com */
+/* pb.js -- (C) 2013-present  SheetJS -- http://sheetjs.com */
 /* vim: set ts=2: */
 /*jshint node:true */
-var $ = require('nodobj'+'c');
+var $ = require('nodobjc');
 $.framework('AppKit');
 $.NSAutoreleasePool('alloc')('init');
 
-var basetypes = [ 'HTML', 'PNG', 'TEXT' ];
+exports.version = '0.3.1';
+
+var basetypes = [ 'HTML', 'PNG', 'TEXT', 'RTF' ];
 var alltypes;
 
 var mytype = exports.mytype = function mytype(type/*:string*/)/*:Array<any>*/ {
 	if(!type) return [$.NSStringPboardType, 's'];
 	switch(type.toUpperCase()) {
-		case 'HTML': return [$.NSHTMLPboardType, 's'];
-		case 'PNG': return [$.NSHTMLPboardType, 'i'];
-		case 'TEXT': return [$.NSStringPboardType, 's'];
+		case 'HTML': return [$.NSHTMLPboardType,        's'];
+		case 'PNG':  return [$.NSHTMLPboardType,        'i'];
+		case 'TEXT': return [$.NSStringPboardType,      's'];
+		case 'RTF':  return [$.NSRTFPboardType,         's'];
 	}
 	return [$[type], 's'];
 };
 
+var filterfunc = function(x/*:string*/)/*:boolean*/ { return !!(x.match(/^NS.*PboardType$/)); };
 exports.gettypes = function gettypes()/*:Array<any>*/ {
 	if(!alltypes) {
-		var filterfunc = function(x) { return x.match(/^NS.*PboardType$/); };
 		var nstypes = Object.keys($).filter(filterfunc);
 		alltypes = basetypes.concat(nstypes);
 	}
 	return alltypes;
 };
 
-exports.version = '0.3.0';
-
 exports.get = function get(type/*:string*/)/*:any*/ {
 	var x = $.NSPasteboard('generalPasteboard');
 	var tt = mytype(type);
@@ -54,3 +55,15 @@ exports.set = function set(type/*:string*/, str/*:string*/)/*:void*/ {
 			return x('setString', data, 'forType', t);
 	}
 };
+
+function NSArray2ArrayStr(arr)/*:Array<string>*/ {
+	var out/*:Array<string>*/ = [];
+	var len = arr('count');
+	for(var i = 0; i < len; ++i) out[i] = arr('objectAtIndex', i).toString();
+	return out;
+}
+
+exports.available = function avail()/*:Array<string>*/ {
+	var x = $.NSPasteboard('generalPasteboard');
+	return NSArray2ArrayStr(x('types'));
+};