Added a CHANGELOG to keep track of the version changes.

Renamed the directive and module to `sfTypeahead` from `ngTypeahead`.
Tweaked the ngModel watch to use one less variable.

FIX: Siyfion#1 bugfix. Along with adding support for both 'A' & 'E' d…

…irective types.

Changed the module name, to stop it from colliding with any Angular (…

…ng) directives in future.

Up-revisioned to v0.0.3.

Excluded build files from the bower package.

Initial version of the (very simple) typeahead wrapper.