update imaging flow cytometry website

[holgerhennig]

The CP imaging flow cytometry website
https://cp-website.github.io/imaging-flow-cytometry/
needs to be updated with the latest streamlined workflow from our 2016 Methods paper. I'll send a pull request when done..

[N3llz]

Rather, @holgerhennig should update: http://cellprofiler.org/imagingflowcytometry/index.html
And I will update the link in the tutorials page to go to http://cellprofiler.org/imagingflowcytometry/index.html rather than https://cp-website.github.io/imaging-flow-cytometry/

[N3llz]

#102 addresses the redirect needed

[holgerhennig]

Thanks Jeanelle, will do :)