changed release branhch to 2.0
auto updated documentation
updated Codeception\TestCase\Test for BC; Bootstrap now updated .gitignore according to naming conventions
updated guides for friends
docs better formatted
updated guides to use tester
Update 07-AdvancedUsage.md
#1064 WebDriver selector-less see() and dontSee() now only check visible text.
[Bug Fix] Ability to check for records in sqlite DB using NULL

This is a copy of the fix applied to the MySQL driver, but needs to be applied here to allow it to fix sqlite.

https://github.com/Codeception/Codeception/commit/9467f61c97bc23c2a5b35ff4f89deb26f10ab1fc
updated docs
updated changelog
updated docs
Minor typo in docs

Fixed a minor typo in docs.
Update AdvancedUsage docs

The "::for" sould be "::create" since we are defining a "create" function inside the UserLoginPage and not "for":
Merge pull request #1077 from Fuhrmann/patch-1

Minor typo in docs
Update 07-AdvancedUsage.md
Upgraded facebook webdriver to v0.4
Merge pull request #1081 from motin/1.8-using-facebook-webdriver-v0.4

Upgraded facebook webdriver to v0.4 [1.8 backport]
fixed compatibility between ScenarioDriven interface and ScenarioPrint #1078
Merge branch '2.0' of github.com:Codeception/Codeception into 2.0