configure release workflow

Author: Axel Delmas

.mversionrc

@@ -0,0 +1,4 @@
+{
+  "commitMessage": "Release %s",
+  "tagName": "v%s"
+}

package.json

@@ -19,6 +19,10 @@
     "prebuild": "npm run clean & npm run test",
     "build": "browserify -s Hls src/hls.js --debug | exorcist dist/hls.js.map -b . > dist/hls.js",
     "postbuild": "npm run minify",
+    "prerelease": "npm run prebuild && npm run build && npm run postbuild && git add dist/* && git commit -m 'update dist'",
+    "patch": "npm run prerelease && mversion p",
+    "minor": "npm run prerelease && mversion mi",
+    "major": "npm run prerelease && mversion ma",
     "minify": "uglifyjs dist/hls.js -c sequences=true,dead_code=true,conditionals=true,booleans=true,unused=true,if_return=true,join_vars=true,drop_console=true -m sort --screw-ie8 > dist/hls.min.js",
     "watch": "watchify --debug -s Hls src/hls.js -o dist/hls.js",
     "pretest": "npm run lint",
@@ -48,6 +52,7 @@
     "jshint": "^2.5.11",
     "live-reload": "^0.2.0",
     "mocha": "^2.1.0",
+    "mversion": "^1.10.1",
     "opener": "^1.4.0",
     "parallelshell": "^1.0.3",
     "uglify-js": "^2.4.23",