Release 0.14.0.M2
Implement Observable.sample + Observable.publishLast

Issues touched:

- monifu/monifu#10
- monifu/monifu.js#7
- monifu/monifu.js#4
Update README
Implement Observable.sample + Observable.publishLast

Issues touched:

- monifu/monifu#10
- monifu/monifu.js#7
- monifu/monifu.js#4

Conflicts:
	README.md
	monifu-rx/src/test/scala/monifu/reactive/ObservableOperatorsOnRangeTest.scala
	monifu-rx/src/test/scala/monifu/reactive/ObservableOperatorsOnUnitTest.scala