refactor(ngx-material-password-strength): supporting now angular v6 material v6 and rxjs v6

Author: AnthonyNahas

README.md

@@ -103,22 +103,22 @@ In the following example, we integration a material input container with `ngx-ma
 
 ```html
 <div>
-  <mat-input-container floatPlaceholder="auto" style="width: 100%">
+  <mat-form-field floatPlaceholder="auto" style="width: 100%">
          <input matInput #password
                 [type]="inputType"
                 required
                 placeholder="Password">
          <mat-hint align="end" aria-live="polite">
            {{password.value.length}} / 25
          </mat-hint>
-       </mat-input-container>
+       </mat-form-field>
        <ngx-material-password-strength
          [password]="password.value">
        </ngx-material-password-strength>
      </div>
 ```
 
-[learn more about mat-input-container](https://material.angular.io/components/input/overview)
+[learn more about mat-form-field](https://material.angular.io/components/input/overview)
 
 ### Please checkout the full documentation [here](https://anthonynahas.github.io/ngx-material-passowrd-strength/doc/index.html) or follow the official [tutorial](https://anthonynahas.github.io/ngx-material-password-strength/getting-started) 
 

demo/.angular-cli.json

@@ -4,19 +4,19 @@
 module.exports = function (config) {
   config.set({
     basePath: '',
-    frameworks: ['jasmine', '@angular/cli'],
+    frameworks: ['jasmine', '@angular-devkit/build-angular'],
     plugins: [
       require('karma-jasmine'),
       require('karma-chrome-launcher'),
       require('karma-jasmine-html-reporter'),
       require('karma-coverage-istanbul-reporter'),
-      require('@angular/cli/plugins/karma')
+      require('@angular-devkit/build-angular/plugins/karma')
     ],
     client:{
       clearContext: false // leave Jasmine Spec Runner output visible in browser
     },
     coverageIstanbulReporter: {
-      reports: [ 'html', 'lcovonly' ],
+      dir: require('path').join(__dirname, 'coverage'), reports: [ 'html', 'lcovonly' ],
       fixWebpackSourcePaths: true
     },
     angularCli: {