Moved Parser to new package. Updated imports
IMPORTANT TAKE NOTE CategoryList provides static methods to handle the list. Might need to think about loading the list
New Interface CommandHandler and new implemented MainCommandHandler
Packages import for parsedResult
Revamp part 1. Use MainCommandHandler to parse main commands
testparser shifted in Parser package. Writing test cases to test Parser
Merge pull request #50 from cs2103aug2014-t17-1j/RestructureOfParserAndParsedResult

Restructure of parser and parsed result