Refactor cli and move responsibilities out of Extractor

src/extractor.ts

@@ -1,7 +1,4 @@
 import { ParserInterface } from './parsers/parser.interface';
-import { PipeParser } from './parsers/pipe.parser';
-import { DirectiveParser } from './parsers/directive.parser';
-import { ServiceParser } from './parsers/service.parser';
 import { TranslationCollection } from './utils/translation.collection';
 
 import * as glob from 'glob';
@@ -9,17 +6,7 @@ import * as fs from 'fs';
 
 export class Extractor {
 
-	public patterns: string[] = [
-		'/**/*.html',
-		'/**/*.ts',
-		'/**/*.js'
-	];
-
-	public parsers: ParserInterface[] = [
-		new PipeParser(),
-		new DirectiveParser(),
-		new ServiceParser()
-	];
+	public constructor(public parsers: ParserInterface[], public patterns: string[]) { }
 
 	/**
 	 * Extract strings from dir