```ruby
# encoding: utf-8

Gem::Specification.new do |gem|
    gem.add_dependency 'faraday', '~> 0.7'
    gem.add_dependency 'simple_oauth', '~> 0.1'
    gem.add_dependency 'json'
    gem.add_development_dependency 'rake'
    gem.add_development_dependency 'rspec'
    gem.add_development_dependency 'webmock'
    gem.authors = ["John Bunting"]
    gem.description = %q{A Ruby wrapper for the Tumblr API}
    gem.email = ['codingjester@gmail.com']
    gem.executables = `git ls-files -- bin/*`.split("\n").map{|f| File.basename(f)}
    gem.files = `git ls-files`.split("\n")
    gem.homepage = "http://github.com/codingjester/tumblr"
    gem.name = "tumblr"
    gem.require_libs = ["lib"]
    gem.required_rubygems_version = Gem::Requirement.new('>= 1.3.6')
    gem.summary = %q{Tumblr API wrapper}
    gem.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
    gem.version = "0.5"
end
```

Modify gemspec to not fail
user
```ruby
# encoding: utf-8

Gem::Specification.new do |gem|
    gem.add_dependency 'faraday', '~> 0.7'
    gem.add_dependency 'simple_oauth', '~> 0.1'
    gem.add_dependency 'json'
    gem.add_development_dependency 'rake'
    gem.add_development_dependency 'rspec'
    gem.add_development_dependency 'webmock'
    gem.authors = ["John Bunting"]
    gem.description = %q{A Ruby wrapper for the Tumblr API}
    gem.email = ['codingjester@gmail.com']
    gem.executables = `git ls-files -- bin/*`.split("\n").map{|f| File.basename(f)}
    gem.files = `git ls-files`.split("\n")
    gem.homepage = "http://github.com/codingjester/tumblr"
    gem.name = "tumblr"
    gem.require_paths = ["lib"]
    gem.required_rubygems_version = Gem::Requirement.new('>= 1.3.6')
    gem.summary = %q{Tumblr API wrapper}
    gem.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
    gem.version = "0.5"
end
```
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