Changed naming to use - instead of _ to follog naming rules

lib/open_project/backlogs/engine.rb

@@ -1,5 +1,5 @@
 require 'acts_as_silent_list'
-require 'openproject_nissue'
+require 'openproject-nissue'
 
 module OpenProject::Backlogs
   class Engine < ::Rails::Engine
@@ -86,7 +86,7 @@ module OpenProject::Backlogs
           author 'relaxdiego, friflaj, Finn GmbH'
           description 'A plugin for agile teams'
 
-          url 'https://github.com/finnlabs/openproject_backlogs'
+          url 'https://github.com/finnlabs/openproject-backlogs'
           author_url 'http://www.finn.de/'
 
           version OpenProject::Backlogs::VERSION

openproject-backlogs.gemspec

@@ -5,7 +5,7 @@ require "open_project/backlogs/version"
 
 # Describe your gem and declare its dependencies:
 Gem::Specification.new do |s|
-  s.name        = "openproject_backlogs"
+  s.name        = "openproject-backlogs"
   s.version     = OpenProject::Backlogs::VERSION
   s.authors = "Finn GmbH"
   s.email = "info@finn.de"
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
   s.add_dependency "rails", "~> 3.2.9"
   s.add_dependency "prawn"
   s.add_dependency "acts_as_silent_list"
-  s.add_dependency "openproject_nissue"
+  s.add_dependency "openproject-nissue"
 
   s.add_development_dependency "factory_girl_rails", "~> 4.0"
   s.add_development_dependency "pdf-inspector", "~>1.0.0"