Added badges
Revert branch alias change 

This is following c03a5e963adf5248166b08c8fe9e2f1b56df34b9.
Fix typo.
Allow user to pass paramaters when fetching invoices
Merge pull request #76 from ChristopherJaoude/master

Fix typo.
Implement missing method on web hook controller.
Merge pull request #72 from GrahamCampbell/patch-2

Revert branch alias change
Merge pull request #70 from GrahamCampbell/patch-3

Added badges
Adds getSubscriptionEndDate function

Adds public getSubscriptionEndDate function in order to get the date the subscription will renew at to show subscribers on their billing info page.
Merge pull request #81 from nfeiglin/master

Allow easy access to get the date the subscription will end / automatically renew
Merge pull request #77 from RyanNielson/allow_user_to_pass_params_to_invoices

Allow user to pass paramaters when fetching invoices
Fixed docblocks
Updated docs
Updated the changes file
Fixed some typos
Merge pull request #86 from GrahamCampbell/docs

Documentation Improvements
Merge pull request #85 from GrahamCampbell/fixes

Fixed Docblocks
return missing method.
Update changes.md
Version 2.0.4