Update Development version
Merge tag 'v0.8'
Damn, update README
Merge branch 'master' into development
Fix Gradle dependency string
Small fixes when using Theme.NoActionBar
Start new way of adding HeaderView to Activity
Fix new HeaderView adding method for ICS+
HeaderView is now added as a new Window.

Means that the PullToRefreshAttacher can be created at ANY time during an Activity's lifecycle.
Downside is that I've had to add a destroy() which needs to be called on pre-ICS devices.
Update ABC & ABS samples to use destroy()
Add Action Items to ListView Sample
Fix Action Bar View's not being touchable on first run.

Closes #140
Fix Code Formatting. Not sure how the spaces were replaced with Tabs
Only intercept events if they're travelling in the vertical direction.

Closes #128.
Fix typo in last commit
Wrap OnRefreshListener in a WeakReference. Should close #141
Fix Initial X assignment
Keep floats instead of ints for co-ordinates
Clear out internal state in destroy()
Fix Stupid Typo