Allow overriding touch detection pr event

Override the `_useTouchHandlers` method for more fine grained
control of when to use, or not use, touch handlers.
Some third party libraries might have trouble with non-click events
and chosing strategy pr selector is needed
Add possibility to customize the threshold value
GruntJS v4 migration

Signed-off-by: Loïc Mahieu <mahieuloic@gmail.com>
Merge pull request #10 from LoicMahieu/feature/custom_threshold

Add possibility to customize the threshold value
Merge pull request #11 from LoicMahieu/feature/gruntv4

GruntJS v4 migration
release 0.3.0

Signed-off-by: Loïc Mahieu <mahieuloic@gmail.com>
Rename component.json to bower.json and update definition
merging with upstream