adding Musician class & chainging Perfor class
Merge branch 'master' of https://github.com/hongkunyoo/moodly-project

Conflicts:
	Moodly/src/com/pinthecloud/moodly/fragment/PerformFragment.java
	Moodly/src/com/pinthecloud/moodly/model/Musician.java
	Moodly/src/com/pinthecloud/moodly/model/Perform.java