added demo images, tweaked readme
added last demo image and upadted URLs in readme
Merge branch 'develop'

Conflicts:
	README.mkd
made better demo images and slightly improved plotting
Merge branch 'develop'
tweaked readme
tweaking readme markup
more markup tweaks
added more to readme
moved images to mit hosting
fixed clone url
actually fixed clone url
moved mit hosted image urls
made eigen version optional! also cleaned up some misc stuff
changed plotting back to every 25, added /*.png to gitignore
clarified eigen line in demo
added animation to readme
made multiple chains work for HSMMs! very exciting
got hmm class to work and added an (untested) sticky hmm class, since hmms fail so hard
moved demos out of demo folder