Misc updates, bugfixes, added some license text
Fix ForthIDE
#9 Refactor ForthIDE
#10 Eliminate some warnings
#10 Eliminate warnings and FindBugs bugs
#11 Changed block into file

All occurences of the word block in the source were chaned into file,
additionally any occurences of buffer were also changed into file.
Small fixes and improvements, change the word add-it to pack