Added ruby gem version to README ⓜⓞⓐⓡ ⓡⓔⓛⓔⓐⓢⓔⓢ
Merge pull request #13 from makaroni4/master

Added ruby gem version to README ⓜⓞⓐⓡ ⓡⓔⓛⓔⓐⓢⓔⓢ