Make TaskManager a singleton class
Merge pull request #29 from andhieka/working

Modified the Date class to include more APIs: getPrettyFormat, toString, ...
Merge pull request #31 from andhieka/working

Fixed date printing in UI
Finish converting list of tasks to JSONObject
Merge branch 'master' into storage

Conflicts:
	src/list/AddCommandTest.java
	src/list/Category.java
	src/list/Date.java
	src/list/DeleteCommandTest.java
	src/list/DisplayCommandTest.java
	src/list/EditCommandTest.java
	src/list/TaskManager.java
disabled back space key at the specific point, and disabled arrows key!
Merge pull request #33 from liafailboy/master

disabled back space key at the specific point, and disabled arrows key!
Finish converter for TASKS
Merge pull request #34 from mikelimantara/storage

Converter Class able to parse list of task to Json and vice versa
added to make the string TODAY or TOMORROW if the date is the day. Minor change in UI.
Merge pull request #35 from liafailboy/working

added to make the string TODAY or TOMORROW if the date is the day. Minor...
Added the task number on the tasks
Merge pull request #37 from liafailboy/working

Added the task number on the tasks
Basic template for FlexiCommandParser