Tests for Twitter and LinkedIn OAuth1 providers
Minor fixes

Typos, documentation improvements and minor refactoring.
Merge pull request #1 from fernandoacorreia/fix-typos2

Minor fixes
Merge pull request #82 from akkie/master

Tests for Twitter and LinkedIn OAuth1 providers
Tests for Xing provider
Use only constants
Merge pull request #83 from akkie/master

Tests for Xing provider
OAuth1Info can be the same for all tests
Merge pull request #84 from akkie/master

OAuth1Info can be the same for all tests
Use constant for cache expiration
Merge pull request #85 from akkie/master

Use constant for cache expiration
Avoid var
Merge pull request #86 from akkie/master

Avoid var
Change access modifier for methods buildProfile and doAuth to public. So the user can implement it's own authentication flow and it is easier to test.
Merge pull request #87 from akkie/master

Change access modifier for methods buildProfile and doAuth to public.
Remove unnecessary curly braces
Merge pull request #89 from akkie/master

Remove unnecessary curly braces
Tests for Facebook provider
Merge pull request #90 from akkie/master

Tests for Facebook provider
Remove unnecessary whitespace