Merge pull request #62 from Nantonos/master

thanks
Simplify & document SGTL5000 control
Update SGTL5000 keywords
Fix typo in documentation
Udate SGTL5000 examples
Merge pull request #63 from Nantonos/master

Add simple pulse waveform
Fix export button when no changes in GUI
Merge remote-tracking branch 'upstream/master'