Missing "self::" in the signature

SHD::fileGetHtml() signature has class constants in it but they were mising the "self::" closure.
Missing class definition for constants

Most of he constants used in the code are coming from SHD class, but missing the "SHD::" part.
Missing class definition for constants

Most of the constants used in the class are coming form SHD class bu missing the "SHD::" part.
Wrong function name restore_noise()

It is called restoreNoise()
Wrong class name simple_html_dom
Merge pull request #2 from Antronin/master

Missing "self::" closure in function signature