fix: update to angular ^6.0.0

There is really no change, it's just an update to a version number of angular.

closes yisraelx#7

Author: yisraelx

package.json

@@ -74,36 +74,36 @@
     }
   },
   "dependencies": {
-    "@types/showdown": "^1.7.2"
+    "@types/showdown": "^1.7.3"
   },
   "peerDependencies": {
-    "@angular/common": "^5.2.2",
-    "@angular/core": "^5.2.2",
+    "@angular/common": "^6.0.0",
+    "@angular/core": "^6.0.0",
     "showdown": "^1.8.6"
   },
   "devDependencies": {
-    "@angular/animations": "^5.2.2",
-    "@angular/cdk": "^5.1.1",
-    "@angular/common": "^5.2.2",
-    "@angular/compiler": "^5.2.2",
-    "@angular/compiler-cli": "^5.2.2",
-    "@angular/core": "^5.2.2",
-    "@angular/forms": "^5.2.2",
-    "@angular/http": "^5.2.2",
-    "@angular/material": "^5.1.1",
-    "@angular/platform-browser": "^5.2.2",
-    "@angular/platform-browser-dynamic": "^5.2.2",
-    "@angular/router": "^5.2.2",
+    "@angular/animations": "^6.0.0",
+    "@angular/cdk": "^6.0.1",
+    "@angular/common": "^6.0.0",
+    "@angular/compiler": "^6.0.0",
+    "@angular/compiler-cli": "^6.0.0",
+    "@angular/core": "^6.0.0",
+    "@angular/forms": "^6.0.0",
+    "@angular/http": "^6.0.0",
+    "@angular/material": "^6.0.1",
+    "@angular/platform-browser": "^6.0.0",
+    "@angular/platform-browser-dynamic": "^6.0.0",
+    "@angular/router": "^6.0.0",
     "@types/core-js": "^0.9.46",
     "@types/jasmine": "^2.8.6",
-    "@types/node": "^9.4.0",
+    "@types/node": "^10.0.4",
     "@types/webpack": "^3.8.4",
     "angular2-template-loader": "^0.6.2",
     "clean-webpack-plugin": "^0.1.18",
-    "codecov": "^3.0.0",
-    "codelyzer": "^4.1.0",
+    "codecov": "^3.0.1",
+    "codelyzer": "^4.3.0",
     "commitizen": "^2.9.6",
-    "core-js": "^2.5.3",
+    "core-js": "^2.5.6",
     "css-loader": "^0.28.9",
     "cz-conventional-changelog": "^2.1.0",
     "extract-text-webpack-plugin": "^3.0.2",
@@ -123,22 +123,22 @@
     "karma-remap-coverage": "^0.1.5",
     "karma-source-map-support": "^1.2.0",
     "karma-webpack": "^2.0.9",
-    "npm-run-all": "^4.1.2",
+    "npm-run-all": "^4.1.3",
     "null-loader": "^0.1.1",
     "raw-loader": "^0.5.1",
     "rimraf": "^2.6.2",
-    "rxjs": "^5.5.6",
-    "semantic-release": "^12.4.1",
+    "rxjs": "^6.1.0",
+    "semantic-release": "^15.3.1",
     "showdown": "^1.8.6",
     "style-loader": "^0.20.1",
     "ts-loader": "^3.4.0",
     "ts-node": "^4.1.0",
     "tslint": "^5.9.1",
-    "typescript": "^2.7.1",
+    "typescript": "2.7.2",
     "validate-commit-msg": "^2.14.0",
     "webpack": "^3.10.0",
     "webpack-dev-server": "^2.11.1",
-    "yarn": "^1.3.2",
-    "zone.js": "^0.8.20"
+    "yarn": "^1.6.0",
+    "zone.js": "^0.8.26"
   }
 }