Update CLI version to 6.0.0-beta.7

Author: alejandroSuch

README.md

@@ -7,7 +7,7 @@
                |___/
 ```
 
-**@angular/cli:** 6.0.0-beta.2<br/>
+**@angular/cli:** 6.0.0-beta.7<br/>
 **node:** 6.11.2<br/>
 **npm:** 3.10.10<br/>
 **yarn:** 0.24.6<br/>
@@ -24,19 +24,19 @@ This image has the same usage as Angular CLI (https://cli.angular.io/)
 ### Creating a project
 
 ```
-docker run -it --rm -w /app -v $(pwd):/app alexsuch/angular-cli:6.0.0-beta.2 ng new my-project-name
+docker run -it --rm -w /app -v $(pwd):/app alexsuch/angular-cli:6.0.0-beta.7 ng new my-project-name
 ```
 
 ### Generating a component
 
 ```
-docker run -it --rm -w /app -v $(pwd)/my-project-name:/app alexsuch/angular-cli:6.0.0-beta.2 ng g component sample-component
+docker run -it --rm -w /app -v $(pwd)/my-project-name:/app alexsuch/angular-cli:6.0.0-beta.7 ng g component sample-component
 ```
 
 ### Serving
 
 ```
-docker run -it --rm -w /app -v $(pwd)/my-project-name:/app -p 4200:4200 alexsuch/angular-cli:6.0.0-beta.2 ng serve --host 0.0.0.0
+docker run -it --rm -w /app -v $(pwd)/my-project-name:/app -p 4200:4200 alexsuch/angular-cli:6.0.0-beta.7 ng serve --host 0.0.0.0
 ```
 
 ## Credits