little chanage .gitignore and CMakeLists.txt
merge upstream InvictusInnovations/keyhotee
Merge pull request #37 from vipjeffreylee/jf-develop

ignore Qt Creator compile genorate temp files and fix cannot open output file /bin/Keyhotee: Permission denied if not set env INVICTUS_ROOT
Correct some mistakes in description of procedure to connect Keyhotee clients.
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee