poll github for new releases - closes #6

app/util/versioning/versioning.ts

@@ -0,0 +1,28 @@
+import axios from 'axios';
+import * as _ from 'lodash';
+
+class Versioning {
+  private readonly releaseEndPoint: string = 'https://api.github.com/repos/mgerb/ps-launcher/releases';
+
+  public async checkForUpdates(): Promise<boolean> {
+    const res = await axios.get(this.releaseEndPoint);
+
+    return !!_.find(res.data, (release: any) => {
+      return this.parseVersion(release.tag_name) > this.parseVersion(VERSION);
+    });
+  }
+
+  
+  /**
+   * returns a number value for a version string matching '0.0.1'
+   * @param {string} version 
+   * @returns {*} 
+   * @memberof Versioning
+   */
+  public parseVersion(version: string): number {
+    const parts = version.split('.');
+    return _.sumBy(parts, p => parseInt(p, 10));
+  }
+}
+
+export const versioning = new Versioning();