Removed use of ::class not supported by PHP < 5.5 (#81)

You are completely correct, thanks for your submission!!

we can set element potision( top, left) (#80)

* Set a Element Top,Left Position

we can set a element top,left position.

* we can set element top left positon

we can set element potision( top, left) (#80)

* Set a Element Top,Left Position

we can set a element top,left position.

* we can set element top left positon

Ensure that the PhantomJS command executes successfully (#71)

* Ensure that the PhantomJS command executes successfully

* Validate on return code instead of anything was in the output

Inject js (#65)

* Added Exception Classes
URL validation moved into separate class

* Added local path validation
Added facebook utility scripts to inject

* Fixed exception namespace

* Image format refactored

* Added js injection

* Added docs

* Nitpick-CI fixes

* Added Exception Classes
URL validation moved into separate class

* Added local path validation
Added facebook utility scripts to inject

* Fixed exception namespace

* Image format refactored

* Added js injection

* Added docs

* Nitpick-CI fixes

* Changed timeout naming
Added timeout value validation

Default background color in case of png is transparent

V1.0.1 (#45)

* Now the background color and the user agent can be changed
Added clean jobs functionality - fixed #38
Updated vendor

* Added setUrl method
Added configuration to set the default output directory

* Small fixes

* Fixed typo

* Updated binaries, documentation and license

* Added post install script

Fixed #44

Merge pull request #34 from MASNathan/master

Screen Class

Update README.md