Fix $toggle
=== > ==
Fix build break.

Specify a particular version of gulp-typescript due to 2.1 breaking us.
Migrate to using del in gulp
Merge pull request #27 from OneJSToolkit/bobnisco/migrate-del

Migrate to using del in gulp. Fixes #26
Merge pull request #24 from OneJSToolkit/bobnisco/proptargetfix

Fix $toggle
Merge branch 'master' into eventgroupfixes