Fixing typos.

Author: Sean Hussey

docs/INSTALLING.md

@@ -22,7 +22,7 @@ code-corps-ember/    # → Root folder for this project
     ├── abilities/   # → Used by `ember-can` to manage user access
     ├── components/  # → Specialized components used by routes
     ├── controllers/ # → Handles UI Behavior
-    ├── models/      # → persitent data
+    ├── models/      # → persistent data
     ├── routes/      # → Routes for URL handling
     ├── styles/      # → Style Sheets (we use Sass)
     ├── templates/   # → HTMLbars templates
@@ -78,7 +78,7 @@ npm ERR! Please make sure you have the correct access rights
 npm ERR! and the repository exists.
 ```
 
-you will need to [associate your ssh key with github](https://help.github.com/articles/generating-an-ssh-key/)
+you will need to [associate your ssh key with GitHub](https://help.github.com/articles/generating-an-ssh-key/)
 
 ## Verify it worked
 

docs/SQUASHING.md

@@ -111,7 +111,7 @@ The first commit I did
 The second commit I did
 ```
 
-You'll want to remove or comment out everything except for the first message, which you can edit to be a more complete summary of your changes. Once again, save and close teh file.
+You'll want to remove or comment out everything except for the first message, which you can edit to be a more complete summary of your changes. Once again, save and close the file.
 
 To finish, you'll force push this new commit with the following command:
 

docs/USAGE.md

@@ -94,7 +94,7 @@ The Code Corps Ember application uses [YUIDoc](http://yui.github.io/yuidoc/) for
 
 When contributing to the documentation please follow our [style guide](docs/STYLEGUIDE.md) and [YUIDoc's syntax guidelines](http://yui.github.io/yuidoc/syntax/index.html).
 
-To compile documentation from accross the app, install and run YUIDoc:
+To compile documentation from across the app, install and run YUIDoc:
 
 ```shell
 npm install -g yuidocjs