modified view files and renamed error partial
Update _form.html.erb
Update _form.html.erb
route changes
Merge branch 'chapter2' of https://github.com/pigeonhole/first_app into chapter2
merging chapter3 to master
Merge pull request #1 from pigeonhole/chapter4_to_6

Chapter4 to 6
gravatar for user email
Merge branch 'chapter4_to_6'
Merge branch 'master' of https://github.com/pigeonhole/first_app