added FloatingTask class for floating tasks
Merge branch 'master' of https://github.com/cs2103aug2014-w14-3j/main
Implements controller interface
Revert "Implements controller interface"

This reverts commit 5f07a177028a0b85b8235e27ac96a01ed2089349.
Merge branch 'master' of https://github.com/cs2103aug2014-w14-3j/main
add TimedTask class for timed tasks
Merge branch 'master' of https://github.com/cs2103aug2014-w14-3j/main
add DeadlineTask class for deadline tasks
implements contoller interface
added constructor in controller
welcome message
merge from master& add gui entry (not working)