test cases for parse to command
added debug mode
Added colourings

#56 #48
Added date to string parser
Merge branch 'ui/victor' into parser/Victor
Aligned program name at welcome message.
Added colouring to welcome message
Merge commit 'a4a1048de3ffdb69736e712a679b3a76e6517513' into ui/victor
Merge remote-tracking branch 'origin/parser/Victor' into logic/wenhao