worked a bit on US tutorial (not ready yet)
renamed tutorials

now steinhard parameters appears at the end
begin with pathcv
more path
Added downloadable tar balls to my belfast tutorials

Also provided instructions in the developer manual on how to
create these files
Some work on US tutorial
TUTORIAL: analysis of CV part 1

initial draft
more on analysing CVs
CV analysis: continue...
More on pcvs
belfast-1: more
belfast-1: done.
belfast-1
Merge branch 'master' into belfast-tutorials
Belfast-8: first draft
More on path
Added shameless plug about generating PATH reference files with Plumed-GUI
Lossless compression github logo (2MB->50k)
belfast-8: more on this
Merge branch 'belfast-tutorials' of https://github.com/tonigi/plumed2 into belfast-tutorials