added code to delete build directories and files; prevents duplicated results from multiple compilations of the same project
added .gitignore file to mask local libraries required for IntelliJ
library file updates merged
Merge branch 'master' of https://github.com/MichaelHilton/CommandLineReplayProject

Conflicts:
	.idea/libraries/commons_io_2_4.xml
	.idea/libraries/json_simple_1_1_1.xml
	CommandLineReplayProject.iml