[skip CI] document change in devise 3.1
avoid checking errors present before yielding block, yield block always in invite! method, closes #370
fix resending invitation on devise 3.1, fixes #375
update info about rails4 and devise versions
add test for #373
use reversible migration for existing models in README, fixes #381
document how to add parameters to sanitizer, fixes #380
fix link in readme
remove deprecated method
Remove :limit from :invitation_token and provide migration to remove it if present
Merge pull request #386 from kcm/remove_limit_in_docs

Remove :limit from :invitation_token and provide migration to remove it if present
fix migration doc
clear errors on valid keys on inviting with multiple keys, fixes #382
bump to 1.3.0, compatible with devise >= 3.1
values for the invite key hash can be anything that responds to the === operator.
Merge pull request #395 from ginter/callable-invite-key-values

values for the invite key hash can be anything that responds to the === operator
Update README.rdoc

Add an example of how to add strong parameters to the Application Controller.
Merge pull request #396 from anadances/patch-1

Update README.rdoc
fix adding parameters to sanitizer, related to #380
add example for adding parameters without overriding