Update php_eggs.py

Changed description of plugin.
PHP Eggs are no longer "visible" in future PHP version 5.5 and later.
Completed 5.0.x verions (including Release Candidates)

Find PHP releases.
Goto www.shodanhq.com
Search for: X-Powered-By: PHP/5.0.
Completed 4.0.x verions
Completed 4.1.x and 4.2.x verions
Completed 4.3.x verions

4.3.9 has no PHP Logo 2 Egg!
Completed 4.4.x verions. PHP Eggs 4.x is completed.

4.4.7 and 4.4.8 has two egg hashes.
I'am not sure if the second ones are correct.
I just didn't removed them and leaved it as is.
Completed 5.1.x verions

5.1.2 and 5.1.6 has two egg hashes.
I'am not sure if the second ones are correct.
I just didn't removed them and leaved it as is.
Completed 5.2.x verions
Completed 5.3.x verions
Completed 5.4.x. versions
Merge pull request #398 from pvdl/patch-1

* Update php_eggs database
* Change long description plugin