Bump changelog version on version

Author: vincekovacs

package-lock.json

@@ -23,14 +23,15 @@
         "node": ">6.9"
     },
     "scripts": {
+        "changelog:bump": "cross-env-shell sed -i '7a # $npm_package_version\\n' ./CHANGELOG.md",
         "compile": "tsc",
         "coverage": "nyc npm run test",
         "coverage:ci": "npm run coverage && nyc report --reporter=text-lcov | coveralls",
         "test": "mocha --require ts-node/register src/**/*.spec.ts",
         "lint": "npm run lint:ts",
         "lint:ts": "tslint --type-check --project . src/**/*.ts",
         "preversion": "git push && npm test",
-        "version": "npm run compile && git add -A dist",
+        "version": "npm run compile && npm run changelog:bump && git add ./CHANGELOG.md && git add -A dist",
         "postversion": "git push && git push --tags"
     },
     "dependencies": {
@@ -43,6 +44,7 @@
         "@types/mocha": "^2.2.42",
         "@types/sinon": "^2.3.3",
         "chai": "^4.1.2",
+        "cross-env": "^5.0.5",
         "mocha": "^3.5.0",
         "nyc": "^11.2.1",
         "sinon": "^3.2.1",