running herbgobbler a second time in the same application crashes

[ceigel]

Repro. run herbgobbler once. run it again

/usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/rails_translation_store.rb:91:in escape': undefined methodgsub' for nil:NilClass (NoMethodError) from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/rails_translation_store.rb:74:in block in serialize' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/base_translation_store.rb:14:inblock (2 levels) in each' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/base_translation_store.rb:12:in each' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/base_translation_store.rb:12:inblock in each' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/base_translation_store.rb:11:in each' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/base_translation_store.rb:11:ineach' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/core/rails_translation_store.rb:55:in serialize' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/commandline/gobble_all.rb:64:inblock in execute_i18n' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/commandline/gobble_all.rb:64:in open' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/commandline/gobble_all.rb:64:inexecute_i18n' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/lib/commandline/gobble_all.rb:17:in execute' from /usr/local/lib/ruby/gems/2.1.0/gems/herbgobbler-0.3.11/bin/gobble:32:in<top (required)>' from /usr/local/bin/gobble:23:in load' from /usr/local/bin/gobble:23:in

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