proofreading changes
Reduced double body tag to one
Fixed minor typo
Added --app for heroku commands

Application we use to deploy to Heroku without git required to have specified app name.
Have all entries in SUMMARY capitalized similarly

Also, use "introduction" instead "intro" in all occassions
Changed the download link for Python on windows.
Add apostrophe in string example
Upgrade to Django 1.7
Crowdin config