fix install.txt: ruby-2.2.1
fix install.txt: ruby-2.2.1

ShinjiTanimoto/shirasagi,itowtips/shirasagi,gouf/shirasagi,tecoda/opendata,sunny4381/opendata,MasakiInaya/shirasagi,toyodundy/shirasagi,koba5884/shirasagi,toyodundy/shirasagi,itowtips/shirasagi,masakiooba/shirasagi-1,itowtips/ss-handson,hotmix/shirasagi,tany/ss,shirasagi/opendata,tecyama/opendata,kaosf/shirasagi,togusafish/shirasagi-_-shirasagi,tany/ss,tecoda/opendata,ShinjiTanimoto/shirasagi,toyodundy/shirasagi,shirasagi/shirasagi,sunny4381/ss-handson,tecyama/opendata,t-wata-cldt/shirasagi,sunny4381/ss-handson,sert-uw/shirasagi,togusafish/shirasagi-_-shirasagi,bee01/shirasagi,shirasagi/ss-handson,gouf/shirasagi,itowtips/ss-handson,shirasagi/shirasagi,koba5884/shirasagi,tachikomapocket/shirasagi-_-shirasagi,shirasagi/ss-handson,masakiooba/shirasagi-1,sunny4381/opendata,tany/om,gouf/shirasagi,t-wata-cldt/shirasagi,mizoki/shirasagi,shirasagi/opendata,tany/ss,sunny4381/shirasagi,gouf/shirasagi,t-wata-cldt/shirasagi,bee01/shirasagi,mizoki/shirasagi,sunny4381/shirasagi,hotmix/shirasagi,bee01/shirasagi,tecyama/opendata,tany/ss,shirasagi/shirasagi,toyodundy/shirasagi,mizoki/shirasagi,kaosf/shirasagi,MasakiInaya/shirasagi,tany/om,itowtips/ss-handson,shirasagi/ss-handson,shirasagi/shirasagi,sunny4381/opendata,ShinjiTanimoto/shirasagi,ShinjiTanimoto/shirasagi,tany/om,shirasagi/opendata,itowtips/shirasagi,kaosf/shirasagi,itowtips/shirasagi,hotmix/shirasagi,shirasagi/opendata,hotmix/shirasagi,masakiooba/shirasagi-1,koba5884/shirasagi,koba5884/shirasagi,t-wata-cldt/shirasagi,sunny4381/ss-handson,masakiooba/shirasagi-1,tecyama/opendata,sert-uw/shirasagi,tecoda/opendata,sunny4381/shirasagi,sert-uw/shirasagi,tachikomapocket/shirasagi-_-shirasagi,kaosf/shirasagi,mizoki/shirasagi,sunny4381/shirasagi,togusafish/shirasagi-_-shirasagi,tachikomapocket/shirasagi-_-shirasagi,MasakiInaya/shirasagi,sunny4381/ss-handson,bee01/shirasagi,shirasagi/ss-handson,itowtips/ss-handson,MasakiInaya/shirasagi,sert-uw/shirasagi,togusafish/shirasagi-_-shirasagi,tany/om,sunny4381/opendata,tecoda/opendata,tachikomapocket/shirasagi-_-shirasagi