Added card.io libraries
Added card reader functionality to SignUp activity
Added past receipts activity
Class path
Changes in custom element in meal list.
Code refactoring.
Receipt info done with dummy data.
Some strings changed to follow design.
Merge branch 'master' of https://github.com/s7droid/Menu.git

Conflicts:
	MenuProject/.classpath
	MenuProject/src/com/s7design/menu/activities/SignUpActivity.java
Receipt details activity with "dummy" screen implementation.