Bump gem version to 6.2.2

Also, update CONTRIBUTING instructions to clarify that this project requires
updating two version files at current.

Author: Geri Jennings

CONTRIBUTING.md

@@ -68,3 +68,14 @@ Then you can run the cucumber tests:
 root@2b5f618dfdcb:/usr/src/cli-ruby# cucumber
 ...
 ```
+
+## Releasing
+
+To create a new release, follow the instructions in our general release
+guidelines [here](https://github.com/cyberark/community/blob/master/Conjur/CONTRIBUTING.md#release-process).
+
+Note: this project documents the version in two places:
+- The [VERSION](./VERSION) file
+- In [`lib/conjur/version.rb`](./lib/conjur/version.rb)
+
+Both version files must be updated when this project is preparing for a release.

lib/conjur/version.rb

@@ -19,6 +19,6 @@
 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 module Conjur
-  VERSION = '6.2.1'
+  VERSION = '6.2.2'
   ::Version=VERSION
 end