updated changelog and publish documentation

PUBLISHING.md

@@ -0,0 +1,17 @@
+Publishing
+===
+
+Use `tin` to update the version number in the `package.json`, `component.json` & `bower.json`.
+
+    tin -v x.y.z
+
+Then run the publish script
+
+   ./publish.sh
+
+afterwards don't forget to update the versions to be a prerelease of the next version, so if you just published 1.1.1 then:
+
+    tin -v 1.1.2-alpha
+    git add package.json component.json bower.json
+    git commit -m 'update version to 1.1.2-alpha'
+    git push origin master

changelog.md

@@ -1,5 +1,13 @@
 Change log
 ===
+- 2.2.0: Documentation fixes and added proj4.defs('name') as an alias for proj4.defs['name'];
+
+- 2.1.4: dist folder is added back in after accidentally omitting it in 2.1.1
+
+- 2.1.3: skipped as issues with the dist folder are ironed out.
+
+- 2.1.2: added sensible defaults for false eastings/northings
+
 - 2.1.1: tweaks to how we publish it, fixes related to errors with the OSGB36 and Reseau National Belge 1972 datums, we took the first steps towards depreciating the proj4.Point class.
 
 - 2.1.0: targeted builds for projections are now supported, and internally projection creation is more modular.