feat(package): SweetAlert2 is now a peer dependency

BREAKING CHANGE: If you haven't specified sweetalert2 in your direct dependencies yet, do it now!

README.md

@@ -6,17 +6,16 @@
 
 ## :package: Installation & Usage
 
-1) Install via the npm registry:
+1) Install NgSweetAlert2 and SweetAlert2 via the npm registry:
 
 ```bash
-npm install --save @toverux/ngsweetalert2
-
-# or, using yarn instead of npm (yarnpkg.com):
-yarn add @toverux/ngsweetalert2
+npm install --save sweetalert2 @toverux/ngsweetalert2
 ```
 
-2) Then, import SweetAlert's CSS file, exactly like you're doing usually with vendor styles. Could be a TypeScript `import` with Webpack, a SASS `@import`, or even a `<link>` tag: that depends of you build system.
+2) Then, import SweetAlert's CSS (or SCSS) file, exactly like you're doing usually with vendor styles. Could be a TypeScript `import` with Webpack, a SASS `@import`, or even a `<link>` tag: that depends of you build system.
 
+   Its path is `node_modules/sweetalert2/dist/sweetalert2.css`.
+
 3) Finally, import the module:
 
 ```typescript

package.json

@@ -15,11 +15,9 @@
     "webpack-watch": "yarn webpack-build -- --watch",
     "semantic-release": "semantic-release pre && npm publish --access=public && semantic-release post"
   },
-  "dependencies": {
-    "sweetalert2": "^6.6.0"
-  },
   "peerDependencies": {
-    "@angular/core": ">=2.0.0"
+    "@angular/core": ">=2.0.0",
+    "sweetalert2": ">=6.0.0"
   },
   "devDependencies": {
     "@angular/compiler": "^4.0.1",
@@ -29,6 +27,7 @@
     "codelyzer": "^3.1.2",
     "rxjs": "^5.0.3",
     "semantic-release": "^8.0.3",
+    "sweetalert2": "^6.10.2",
     "tslint": "^5.6.0",
     "tslint-loader": "^3.3.0",
     "typescript": "^2.1.5",

yarn.lock

@@ -3192,7 +3192,7 @@ supports-color@^4.0.0, supports-color@^4.2.1:
   dependencies:
     has-flag "^2.0.0"
 
-sweetalert2@^6.6.0:
+sweetalert2@^6.10.2:
   version "6.10.2"
   resolved "https://registry.yarnpkg.com/sweetalert2/-/sweetalert2-6.10.2.tgz#2fdd0d70027d142a08b6b96d4525c71fddfcfe85"