Added ON_TIME OptionType
Corrected behaviour of ON_TIME option
Added ON_TIME OptionType to ADD, UPDATE, and LIST
Merge branch 'master' of https://github.com/cs2103aug2014-w13-2j/main
Refactor Option class
Deleted printout
Rearrange priority to parse OptionType
Refactored parsing of Option
Refactored the generating of regular expression for each OptionType
Refactored Option to remove redundant attributes
Merge branch 'master' of https://github.com/cs2103aug2014-w13-2j/main
Added output even when list or search that return null list
Rewritten parsing CommandList
Nothing