Removed unnecessary node-jquery dependency.
Set JSHint QUnit globals to read-only.

Part of issue #56.
Added tooltip placement change to change log.

Part of issue #31.
Removed unnecessary CSS positioning on test element.

This also makes the linter happier. Related to issue #56.
Upgraded grunt-contrib-watch to version 0.3.
Upgraded grunt-contrib-qunit to version 0.2.
Reformatted change log to be more readable.
Added .jshintrc files to Grunt watch tasks.