Build version number to README
Remove unnecessary var
Only call setMatrix once during a pinch gesture. Related to gh-21.
Do not pan during a pinch if disablePan is true. Supplements gh-21.
Release minor patch v1.4.2
Add FAQ section to the README
FAQ link
Add more demos. Also fixes an issue with contain: true. Close gh-23.

Another demo will accompany focal point zooming when that is ready.