aziz/tmuxinator — pull request #120 by marcosinger (2013-07-26 20:06:06+00:00)
Title: Error on creating a new project

When the config file does not exist, Tmuxinator::Config.project returns nil and raise a error on

```ruby
# /lib/tmuxinator/cli.rb:40
File.open(config, "w") { |f| f.write(erb) }
```