added postgresql requirement to deps in README.md
updated README.md after PostgreSQL issues during env setup
updated PostgreSQL upgrade instractions
added .bash_profile instructions
Pointing to the correct file and adding the image, refs #76.
adding volunteers to chapter pages
Merge pull request #77 from girldevelopit/76-add-favicon

Pointing to the correct file and adding the image, refs #76.
Add rmagick gem to use imagemagick on heroku
Merge pull request #85 from girldevelopit/78-image-resizing

Add rmagick gem to use imagemagick on heroku
Merge pull request #80 from minamarkham/volunteers

adding volunteers to chapter pages
Merge pull request #84 from joshmedeski/city-houston

adding Houston chapter to database
Add favicon to precompile list
Try precompiling elsewhere
Fix Pittsburgh Chapter's Leader Info
fixed syntax of viewport meta tag
changed seed data: changed 'webmistress' to 'admin' and changed 'admin' to 'leader'
changed Ability model to match renamed roles for admin and leader
added development gems better errors and binding of caller
Fix Pgh seeds

With maximum self-abnegation :(
Try precompiling locally