Start clarifying public API and add documentation for API.

Add test coverage for new features

.gitignore

@@ -1,3 +1,5 @@
 /node_modules/
 /dist/
 *.log
+/.nyc_output/
+/coverage/

.vscode/launch.json

@@ -9,15 +9,12 @@
       "request": "launch",
       "name": "Launch Program",
       "program": "${workspaceRoot}/node_modules/.bin/_mocha",
-      "args": [
-        "--no-timeouts",
-        "${workspaceRoot}/dist/test"
-      ],
+      "args": ["--no-timeouts", "${workspaceRoot}/dist/tests"],
       "preLaunchTask": "build",
       "outFiles": [
         "${workspaceRoot}/dist/index.js",
         "${workspaceRoot}/dist/lib/**/*.js",
-        "${workspaceRoot}/dist/test/**/*.js"
+        "${workspaceRoot}/dist/tests/**/*.js"
       ],
       "sourceMaps": true
     }

README.md

@@ -10,6 +10,7 @@ Has TypeScript declarations and supports async/await style testing.
 - [Usage Examples](#usage-examples)
   - [QUnit and TypeScript](#qunit-and-typescript)
   - [Mocha and co](#mocha-and-co)
+- [API](docs/api/index.md)
 
 # Usage Examples