remove Gemfile.lock from gemspec
remove Gemfile.lock from gemspec

A missing Gemfile.lock causing `gem build` to fail

wallclockbuilder/puma,zapnap/puma,ngpestelos/puma,digideskio/puma,calavera/puma,arturocadena/puma,looker/puma,snow/puma,puma/puma,calavera/puma,snow/puma,jbmyid/puma,costi/puma,looker/puma,rkh/puma,ngpestelos/puma,zapnap/puma,snow/puma,unleashed/puma,zBMNForks/puma,respire/puma,jbmyid/puma,matthewd/puma,zBMNForks/puma,matthewd/puma,prathamesh-sonpatki/puma,zBMNForks/puma,digideskio/puma,jc00ke/puma,eileencodes/puma,digideskio/puma,kyledrake/puma,zBMNForks/puma,BenV/puma,BenV/puma,arturocadena/puma,respire/puma,calavera/puma,wallclockbuilder/puma,jbmyid/puma,jc00ke/puma,arturocadena/puma,calavera/puma,nathansamson/puma,ngpestelos/puma,jc00ke/puma,eileencodes/puma,matthewd/puma,rkh/puma,nathansamson/puma,jc00ke/puma,unleashed/puma,wallclockbuilder/puma,wallclockbuilder/puma,prathamesh-sonpatki/puma,puma/puma,tuvistavie/puma,jbmyid/puma,nathansamson/puma,puma/puma,digideskio/puma,puma/puma,tuvistavie/puma,rkh/puma,prathamesh-sonpatki/puma,snow/puma,prathamesh-sonpatki/puma,kyledrake/puma,costi/puma,zapnap/puma,BenV/puma,unleashed/puma,eileencodes/puma,looker/puma,tuvistavie/puma,ngpestelos/puma,respire/puma,nathansamson/puma,respire/puma,kyledrake/puma,kyledrake/puma,looker/puma,costi/puma,eileencodes/puma,arturocadena/puma,rkh/puma,zapnap/puma,unleashed/puma,BenV/puma,costi/puma,matthewd/puma,tuvistavie/puma