Merge pull request #148 from LorenzE/master

MNE Browse Raw Qt
- signal fileLoaded was called at the wrong place
MNE-CPP installer initial commit
minor cleanup and version detection
mne-cpp installer
Add the normal (non-log) x-scale display for spectrum.
Merge pull request #149 from liminsun/master

Add the normal (non-log) x-scale display for spectrum.
- inverted pinch scaling gesture
- min max labels are now hidden if now file is loaded
Merge branch 'master' of https://github.com/mne-tools/mne-cpp