[MAC] Optimalization
Merge branch 'master' of github.com:KIV-ASWI-PL2014/Director

Conflicts:
	Director/ProgramMac.cs
Merge branch 'master' of github.com:KIV-ASWI-PL2014/Director
Merge branch 'master' of github.com:KIV-ASWI-PL2014/Director
Merge branch 'master' of github.com:KIV-ASWI-PL2014/Director
Merge branch 'master' of github.com:KIV-ASWI-PL2014/Director
Add appveyor