public/images/proteopathogen.png
added proteopathogen.png to public/images
Merge branch 'master' of https://github.com/vitalv/proteopathogen_on_rails into dev

* 'master' of https://github.com/vitalv/proteopathogen_on_rails:
  added proteopathogen.png to public/images
  public/images/proteopathogen.png
added presence true to fraction in sar model
peptide evidence is not saving. wtf