Add some introductory posts

Because an API reference alone doesn't give a feel of functional programming with Ramda.
Fix the triple functions.
Merge pull request #212 from mondalaci/fix-example

Fix the triple functions.
Merge pull request #211 from mondalaci/introductions

Add some introductory posts
tweak for and/or docs
Merge branch 'master' of http://github.com/CrossEye/ramda