Adding jshint and Makefile for it.

Makefile

@@ -0,0 +1,12 @@
+NODE := `which node nodejs`
+
+JSHINT_CHECK := ./build/jshint-check.js
+
+all: hint
+
+hint:
+	@@for file in `find . -name "*.js" | grep -v '^\./build/'`; do \
+		echo "Hinting: $$file"; \
+		${NODE} ${JSHINT_CHECK} $$file; \
+		echo "--------------------------"; \
+	done

build/jshint-check.js

@@ -0,0 +1,52 @@
+var JSHINT = require("./lib/jshint/jshint.js").JSHINT,
+  print = require("sys").print,
+  src = require("fs").readFileSync(process.argv[2], "utf8");
+
+JSHINT(
+  src,
+  {
+    evil: true,
+    forin: true,
+    maxerr: 100,
+    noempty: true,
+    nomen: true,
+    node: true
+  }
+);
+
+var ok = {
+
+  // w.reason
+  "Expected an identifier and instead saw 'undefined' (a reserved word).": true,
+  "Use '===' to compare with 'null'.": true,
+  "Use '!==' to compare with 'null'.": true,
+  "Expected an assignment or function call and instead saw an expression.": true,
+  "Expected a 'break' statement before 'case'.": true,
+  "'e' is already defined.": true,
+
+  // w.raw
+  "Expected an identifier and instead saw \'{a}\' (a reserved word).": true
+};
+
+var e = JSHINT.errors, 
+    found = 0, 
+    w;
+
+for ( var i = 0; i < e.length; i++ ) {
+  w = e[i];
+
+  //console.log( w );
+  if ( !ok[ w.reason ] && !ok[ w.raw ] ) {
+    found++;
+    print( "\n " + found + ". Problem at line " + w.line + " character " + w.character + ": " + w.reason );
+    print( "\n" + w.evidence );
+  }
+}
+
+if ( found > 0 ) {
+  print( "\n\n" + found + " Error(s) found.\n" );
+  process.exit(1);
+
+} else {
+  print( "JSHint check passed.\n" );
+}