Fixed examples so that they run :)
Updated .gitignore file
Merge branch 'master' of github.com:mdekauwe/GDAY
Added Kelvins vagrantfile...
Alpha is now a constant in C4 model
Changed incorrect unit definition in comments, Ea
Cross checked c4 code, in theory it is all OK, whether it fits with Sands method requires more thought
Merge remote-tracking branch 'mdekauwe_gday/master'

Conflicts:
	.gitignore
	example/run_experiment.py