added simplecov and specs for user bitcoin address validation
Fix- Generating correct html of hidden password field
  - Before
    <input id="new_password" name="new_password" type="hidden" value="{:value=&gt;true}">
  - After
    <input id="new_password" name="new_password" type="hidden" value="true">
fixed build
Merge pull request #58 from kuldeepaggarwal/t-fixes

Fix- Generating correct html of hidden password field
use new ruby syntax and reduce query count
use Rails defined button_tag instead of plain old HTML
simplify Project#tip_for
Merge pull request #59 from adityakapoor/controller-cleanup

Some controller cleanup
Merge pull request #62 from kuldeepaggarwal/project-cleanup-t

simplify Project#tip_for
Merge pull request #61 from adityakapoor/fix-html

Use Rails defined button_tag instead of plain HTML for consistency
fixed load project
fixed user creation
fixed user updating