Merge pull request #10 from shahariaazam/master

New contributor added
Updates text about password hashing.

Adds snippet on password hashing API.
Updates text about password hashing.

Adds crypt() snippet and links.
Fixes some spelling errors.
Merge pull request #11 from xqus/password-hashing-2

Updates password hashing entry
Reformat
rewording request for content
[NEW] resource learning roadmap
Merge pull request #12 from flavius/fix-wording

Fix wording
Merge pull request #13 from flavius/master

[NEW] resource learning roadmap
Update README.md

Added Flavius Aspra to the list of contributers and added Learning Roadmap to the TOC
License information has been added to Readme.md which was requested by Flavious.
Issue- https://github.com/phpprogrammers/Wiki/issues/14