Merge branch 'logic/wenhao'
Merge branch 'master' into logic/wenhao
Properly parse for situations when there is no additional operand for an additional argument
Updated system test for create using description

--description, -desc, --information, -info, -a
Update relative index reference
Merge branch 'master' of https://github.com/cs2103aug2014-w10-3j/main into logic/wenhao
System test for create using time

--time, -t
System test for create using deadline

--deadline, -d
Activated help command
Deleted unused code
Merge branch 'controller/sharon'
Merge branch 'master' into parser/Victor
Add help handler
Added CommandType Help
Merge remote-tracking branch 'origin/logic/wenhao'
Removed static variables `_argsMap` and `_cmdMap` (along with related methods) from `AdditionalArgumentImpl` and `CommandImpl` respectively.
Added them to `ParserImpl` instead.
Changed constructor for AdditionalArgumentImpl
Transferred all validation and initialising from AdditionalArgument and Command to ParserImpl
Merge branch 'master' into parser/Victor
Used parser