Remove extraneous Thumbs.db files
Add drift correction option (gives segfault for now)
Merge remote-tracking branch 'upstream/master'

Conflicts:
	eyelink_calibrate/eyelink_calibrate.py
	eyelink_calibrate/libeyelink.py

Fixed conflicts
Fixed syntax errors preventing plugin to run

Fixed some critical errors in syntax
Merge pull request #14 from dschreij/master

Fixed some critical syntax errors