Add compatible ruby versions
Add compatible ruby versions

testCloud/grape-swagger-rails,TinkerDev/grape-swagger-rails,dblock/grape-swagger-rails,alexagranov/grape-swagger-rails,aske/grape-swagger-rails,alexagranov/grape-swagger-rails,aske/grape-swagger-rails,TinkerDev/grape-swagger-rails,testCloud/grape-swagger-rails,ruby-grape/grape-swagger-rails,carlos-ramos-mojix-com/grape-swagger-rails,ruby-grape/grape-swagger-rails,proteste/grape-swagger-rails,davidbrewer/grape-swagger-rails,aske/grape-swagger-rails,proteste/grape-swagger-rails,davidbrewer/grape-swagger-rails,ruby-grape/grape-swagger-rails,alexagranov/grape-swagger-rails,proteste/grape-swagger-rails,dblock/grape-swagger-rails,testCloud/grape-swagger-rails,calfzhou/grape-swagger-rails,calfzhou/grape-swagger-rails,carlos-ramos-mojix-com/grape-swagger-rails,carlos-ramos-mojix-com/grape-swagger-rails,dblock/grape-swagger-rails,calfzhou/grape-swagger-rails,davidbrewer/grape-swagger-rails,TinkerDev/grape-swagger-rails