Merge pull request #2 from afffsdd/master

Fixed derpy message when Run is clicked in window
Update README.md
Fixed crash on save dialog.
Fix "Fatal Python Error: PyEval_RestoreThread: NULL tstate" on Windows.
Fixed a crash on creating legend
Added average score to heatmap
Reverted accidental removal that resulted in zombie processes. (Thanks Sh4rK)
Added fallback for users with non-UTF8 Terminals
shebang

the file is executable but without the interpreter specific, attempting to run it on any unixy platform results in a slew of error messages.  that's no fun.
Added reference to mpeterv's tool.
Update README.md
Change interpreter from python to python2
Merge pull request #7 from andrepl/master

shebang
No longer crashes on new rgkit