docs(): typo and grammar fixes in docs (#1931)

Author: ashishpatelcs

docs/deploying-angularfire-to-firebase.md

@@ -3,7 +3,7 @@
 ### 0. Build your Angular project for production
 
 Before you can deploy your angular project, you need to build a version with your prod environment variables.
-Make sure to add your production firebase configuraiton to the src/environments/environment.prod.ts before you build.
+Make sure to add your production firebase configuration to the src/environments/environment.prod.ts before you build.
 
 ```bash
 # build the angular project, creates a dist folder in your directory
@@ -12,7 +12,7 @@ ng build --prod
 
 ### 1. Initializing a Firebase project
 
-You must initialize Firebase Hosting in order to deploy your application. In order to do this run the `firebase init` command.
+You must initialize Firebase Hosting in order to deploy your application. In order to do this, run the `firebase init` command.
 
 Note: If you haven't installed the Firebase CLI yet, run this command:
 
@@ -21,11 +21,11 @@ npm install --global firebase-tools
 ```
 
 - This command prompts you to enter a public directory. Enter `dist` (generated by `ng build -prod`).
-- The command will also ask you if you want to overwrite your index file. Type `n` since your Angular app includes a index file.
+- The command will also ask you if you want to overwrite your index file. Type `n` since your Angular app includes an index file.
 - This command also prompts you whether to configure the project as a single-page app. Enter `y` if you're using Angular Router or similar. Otherwise, enter `n`.
 
 ### 2. Deploy your Project
 
 To deploy your app, simply run `firebase deploy`!
 
-For more information on Firebase `init` and `deploy` commands, checkout the [Firebase CLI documentation](https://firebase.google.com/docs/cli/).
+For more information on Firebase `init` and `deploy` commands, check out the [Firebase CLI documentation](https://firebase.google.com/docs/cli/).

docs/install-and-setup.md

@@ -4,7 +4,7 @@
 
 ### 0. Prerequisites
 
-AngularFire provides multiple module formats for different types of builds. The guide is based off the Angular CLI. It is possible to do a manual setup with Webpack or a SystemJS build as well.
+AngularFire provides multiple module formats for different types of builds. The guide is based on the Angular CLI. It is possible to do a manual setup with Webpack or a SystemJS build as well.
 
 ```bash
 npm install @angular/cli

docs/install-angular-cli-windows10.md

@@ -1,6 +1,6 @@
 # Installing Angular CLI on Windows 10
 
-> There had been installation issues of `@angular/cli` on Windows 10 system. Most of the time these errors are related to Python dependecies and node-gyp.
+> There had been installation issues of `@angular/cli` on Windows 10 system. Most of the time these errors are related to Python dependencies and node-gyp.
 
 Something as below :
 

docs/version-4-upgrade.md

@@ -5,7 +5,7 @@ AngularFire2 4.0 is a refactor of the AngularFire2 package which implements
 
 ### Removing `AngularFire` for Modularity
 
-Prior to 4.0, AngularFire2 did not take advantage of the Firebase SDK's modularity for tree shaking. The `AngularFire` service has now been removed and the library broken up into smaller `@NgModule`s:
+Prior to 4.0, AngularFire2 did not take advantage of the Firebase SDK's modularity for tree shaking. The `AngularFire` service has now been removed and the library is broken up into smaller `@NgModule`s:
 
 * `AngularFireModule`
 * `AngularFireDatabaseModule`

docs/version-5-upgrade.md

@@ -4,7 +4,7 @@ AngularFire 5.0 is a refactor of the `AngularFireDatabase` module. It removes th
 
 ## Updating `FirebaseListObservable` to `AngularFireList<T>`
 
-Rather than `.list()` returning a `FirebaseListObservable`, it now returns an `AngularFireList<T>`. This service contains methods that allow you manipulate and stream data.
+Rather than `.list()` returning a `FirebaseListObservable`, it now returns an `AngularFireList<T>`. This service contains methods that allow you to manipulate and stream data.
 
 In the case of streaming back data, you now call one of the observable methods on `AngularFireList`.