Added Gulp and NPM to automate minify using Uglify..

.gitignore

@@ -1 +1,3 @@
-.*
+node_modules/
+bower_components/
+.idea/

gulpfile.js

@@ -0,0 +1,25 @@
+var gulp = require('gulp');
+var uglify = require('gulp-uglify');
+var del = require('del');
+var path = require('path');
+var rename = require('gulp-rename');
+var uglifySaveLicense = require('uglify-save-license');
+
+gulp.task('clean', function (done) {
+    del([
+        path.join('./', 'angular-google-gapi.min.js')], done);
+});
+
+gulp.task('compress', function() {
+    return gulp.src('angular-google-gapi.js')
+        .pipe(uglify({
+            mangle: false,
+            preserveComments: uglifySaveLicense
+        }))
+        .pipe(rename({
+            extname: '.min.js'
+        }))
+        .pipe(gulp.dest('./'));
+});
+
+gulp.task('default', ['clean', 'compress']);

package.json

@@ -27,4 +27,12 @@
     "url": "https://github.com/maximepvrt/angular-google-gapi/issues"
   },
   "homepage": "https://github.com/maximepvrt/angular-google-gapi"
-}
+  "devDependencies": {
+    "del": "^2.0.2",
+    "gulp": "^3.9.0",
+    "gulp-rename": "^1.2.2",
+    "gulp-uglify": "^1.4.2",
+    "path": "^0.12.7",
+    "uglify-save-license": "^0.4.1"
+  }
+}