when i try to run the rails server after successfully creating a rails application i get following error... can you please suggest some solutions to fix this.
sward@master:~/work/myapp$ rails server /usr/lib/ruby/gems/1.8/gems/execjs-1.2.13/lib/execjs/runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable) from /usr/lib/ruby/gems/1.8/gems/execjs-1.2.13/lib/execjs.rb:5 from /usr/lib/ruby/gems/1.8/gems/coffee-script-2.2.0/lib/ coffee_script.rb:1:in `require' from /usr/lib/ruby/gems/1.8/gems/coffee-script-2.2.0/lib/ coffee_script.rb:1 from /usr/lib/ruby/gems/1.8/gems/coffee-script-2.2.0/lib/coffee- script.rb:1:in `require' from /usr/lib/ruby/gems/1.8/gems/coffee-script-2.2.0/lib/coffee- script.rb:1 from /usr/lib/ruby/gems/1.8/gems/coffee-rails-3.1.1/lib/coffee- rails.rb:1:in `require' from /usr/lib/ruby/gems/1.8/gems/coffee-rails-3.1.1/lib/coffee- rails.rb:1 from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler/ runtime.rb:68:in `require' from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler/ runtime.rb:68:in `require' from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler/ runtime.rb:66:in `each' from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler/ runtime.rb:66:in `require' from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler/ runtime.rb:55:in `each' from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler/ runtime.rb:55:in `require' from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler.rb:122:in `require' from /home/sward/work/myapp/config/application.rb:7 from /usr/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/commands.rb: 52:in `require' from /usr/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/commands.rb: 52 from /usr/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/commands.rb: 49:in `tap' from /usr/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/commands.rb: 49 from script/rails:6:in `require' from script/rails:6
