chore(release) bump version to 0.5.1
chore(release) bump version to 0.5.1

egeland/generator-ng-poly,gdi2290/generator-ng-poly,Ins87/generator-ng-poly,ballerabdude/generator-ng-poly,dustinspecker/generator-ng-poly,TheOneTheOnlyDavidBrown/generator-ng-poly,Ins87/generator-ng-poly,TheOneTheOnlyDavidBrown/generator-ng-poly,ballerabdude/generator-ng-poly,TheOneTheOnlyDavidBrown/generator-ng-poly,Ins87/generator-ng-poly,dustinspecker/generator-ng-poly,dustinspecker/generator-ng-poly,ballerabdude/generator-ng-poly,egeland/generator-ng-poly,sunphg/generator-ng-poly,sunphg/generator-ng-poly,sunphg/generator-ng-poly,gdi2290/generator-ng-poly,egeland/generator-ng-poly