User auth added

First of all thank you guys for your suggestions and support.
This is not final fix for getting medias by tags and locations.

Changes:
if you need to get medias by tags or locations:

$instagram = Instagram::withCredentials('username', 'password');
$instagram->login();
// And then you be able to query instagram with newly updated methods. (Notice that these methods are not static anymore)

$user = $instagram->getAccountById(3);
$medias $instagram->getLocationTopMediasById(1)
$medias = $instagram->getLocationMediasById(1);
$location $instagram->getLocationById(1);
$medias = self::$instagram->getTopMediasByTagName('hello');

Be carefull with login method. I am planning to implement session caching soon

v0.4.8: Merge pull request #65 from fabianoroberto/master

• Check if video links exist in response (when type is video)

Fixes #59. Incorrect number of results returned for getMediasByTag();

v0.4.7

Fixes #59. Incorrect number of results returned for getMediasByTag();

v0.4.6: Merge pull request #57 from fabianoroberto/master

• Improve converting id to hashcode and vice versa
• Return hashtags count

v0.4.5

Enh. Get best image resolution possible in imageHighResolutionUrl in …

Image URLS broken for some medias in getMediaByCode()

v0.4.4

Fixes #47. Image URLS broken for some medias in getMediaByCode()

Make methods getContentsFromUrl and generateRandomString static

Merge pull request #48 from livebit/master

Make methods getContentsFromUrl and generateRandomString static.

Fix 405 error

• Fix 405 error with fetching accounts by id
• Fix 405 error with fetching comments by id

Url encode queries

Merge pull request #39 from shota/master

Add urlencode to endpoint urls

v0.4.0: Merge pull request #38 from fabianoroberto/master

Handle pagination with getPaginateMedias and getPaginateMediasByTag