Natural Language Process working now. It may contain bugs
Whoever is free can try to play with it :)
Merge branch 'parser'
Merge branch 'UI'
Removed buggy isExpired method from all tasks temporarily
Error in sorting deadline tasks and floating tasks resolved
Tester for Logic
Merge branch 'UI'
Changed prettytime-nlp lib directory and classpath
Merge pull request #81 from cs2103aug2014-w15-3J/master

Merge LogicThird with Master
Bug in search list update resolved
updated search method
Merge branch 'parser'
Added assertion to undo and redo methods
task comparator modified
list command fixed      default is list time
Merge branch 'UI'
extract Desc added
attempting to remove double quotes
Merge branch 'parser'
task comparator bug fixed