extract_params :-)
use extract_params everywhere
uses extract_value_from
reduce some lines of code
added TODO support_test
don't do stuff if attrs not present
extract object starting to a method
a link without href generates an error
move things around
extract value error checking and generation to a method
extract url error checking and generation to a method
unify error handling in validator + style fixes
Merge pull request #19 from carlesjove/refactors

DRY refactors