Fix typos
Improve phoenix.new path documentation

Updates copy and adds examples for new phoenix application installation
Merge pull request #67 from davidstump/patch-1

Improve phoenix.new path documentation
allow elixir 0.13.0-dev in app template
Merge pull request #68 from lau/master

allow elixir 0.13.0-dev in app template
Update deps
With latest mix.lock Phoenix requires Elixir v0.13.
Update template mix.lock.
Template application also requires Elixir v0.13-dev.
Mention use of phoenix.start in the template README.md
Merge pull request #71 from HashNuke/fix_template_readme

Mention use of phoenix.start in the template README.md
Merge pull request #69 from darkofabijan/df/versions

Update Elixir dep to v0.13-dev
Render separate error pages per env. Close #72