fix(typo): fixed typo in README (angular#2383)

suhasdeshpande · Danny Blue · commit c71003332409 · 2016-10-03T14:15:05.000-04:00
diff --git a/README.md b/README.md
@@ -319,7 +319,7 @@ export class AppComponent {
 }
 ```
 
-When generating a new project you can also define which extention you want for
+When generating a new project you can also define which extension you want for
 style files:
 
 ```bash

Original file line number	Diff line number	Diff line change
`@@ -319,7 +319,7 @@ export class AppComponent {`
`319`	`319`	`}`
`320`	`320`	```
`321`	`321`
`322`		`-When generating a new project you can also define which extention you want for`
	`322`	`+When generating a new project you can also define which extension you want for`
`323`	`323`	`style files:`
`324`	`324`
`325`	`325`	```bash