Fix spelling error
Grammar fix, and link to Orbiter in README
Fixing markdown formatting in README.

Because these are nested in a list, Markdown doesn't recognize them as code. :(
Update README.md

Fix code indentation at `config.ru` section
Added ruby version check to setup instructions. Added postgres setup instructions to getting started.
Updated instructions for setting DATABASE_URL using a .env file.
Fix a typo: "Delege" -> "Delete"
Fix a typo: "integratoin" -> "integration"
remove double sinatra helpers call
Merge pull request #19 from mkonicek/patch-1

Fix two small typos in README
Merge pull request #15 from mtitolo/readme_ruby_version

Added ruby version check and postgres setup
Merge pull request #8 from zeppelin/patch-1

Update README.md
Merge pull request #5 from mtitolo/master

Link to Orbiter
Merge pull request #1 from czarneckid/patch-1

Fix spelling error
Merge branch 'patch-1' of git://github.com/steveklabnik/helios into steveklabnik-patch-1
Merge branch 'steveklabnik-patch-1'

Conflicts:
	README.md