Fixed findExecutablePath() on osx 10.9
Added .DS_Store (folder metadata file on OSX) to .gitignore
Merge branch 'master' into jernej
Merge pull request #54 from jernejstrasner/master

Small OSX fixes
Fixed config parsing, used variable i twice...
Trimming all configuration lines.
To prevent confusion, for example "[mysection]   " could cause an
"expected ] at end of line".
Removed debug output.
Started work on new multithreading model for mapcrafter.
Added render work (dummy) and progress listener to dispatcher.
Added dummy single- and multithreading dispatchers.
Forgot header/source files of course...
Readme fix, changed "fast" to "high performance"
Some thread refactoring stuff, implemented simple SingleThreadDispatcher
Renamed some headers.
Added concurrent queue.
Implemented thread pool (with dummy workers).
Fixed RenderWorker crashing without the progress bool shared pointer.
Using dispatcher in manager.cpp.
Implemented thread workers, added extra work to render other composite
tiles.
Added average speed to progress bar (only temporary).