./tmp/specs/SDWebImage/2.4/SDWebImage.podspec:5:in `block in _eval_podspec': undefined method `licence=' for #<Pod::Specification for SDWebImage (2.4)> (NoMethodError)
from ./tmp/specs/SDWebImage/2.4/SDWebImage.podspec:1:in `new'
from /app/vendor/bundle/ruby/1.9.1/gems/cocoapods-0.3.2/lib/cocoapods/specification.rb:26:in `initialize'
from ./tmp/specs/SDWebImage/2.4/SDWebImage.podspec:1:in `_eval_podspec'
from /app/vendor/bundle/ruby/1.9.1/gems/cocoapods-0.3.2/lib/cocoapods/specification.rb:5:in `eval'
from /app/vendor/bundle/ruby/1.9.1/gems/cocoapods-0.3.2/lib/cocoapods/specification.rb:5:in `_eval_podspec'
from /app/vendor/bundle/ruby/1.9.1/gems/cocoapods-0.3.2/lib/cocoapods/specification.rb:16:in `from_file'
from /app/vendor/bundle/ruby/1.9.1/gems/picky-3.5.4/lib/picky/index_indexed.rb:9:in `reindex'
from /app/vendor/bundle/ruby/1.9.1/gems/picky-3.5.4/lib/picky/category_indexing.rb:44:in `with_data_snapshot'
from /app/config.ru:1:in `new'
from /app/config.ru:1:in `<main>'
Example: