Add localized support for social security number or equivalent

Localization of US social security number and Canadian Social insurance
number.
Update Canada SSN/SIN provider to create a valid number

The first revision generated a random number in the correct format.
This commit creates a SIN number that passes the checksum as described
here http://http://en.wikipedia.org/wiki/Social_Insurance_Number
Add Olivia as a first name
fa_IR init
optionally pick geo coord within radius of some center
Merge pull request #63 from philadams/geo-center

optionally pick geo coord within radius of some center
Merge remote-tracking branch 'upstream/master'
Merge pull request #66 from bluetreeir/master

add fa_IR language
add ko_KR language
Merge pull request #68 from Pusungwi/master

add ko_KR language
add support for Chinese
Merge pull request #70 from zhaov/master

add support for Chinese
coding and Chinese phone_number bug fix
Merge pull request #71 from zhaov/master

coding and Chinese phone_number bug fix
Fix typo (long tab before name)
Add Russian job names
Update README with Russian job provider example
Merge pull request #72 from JIghtuse/master

Update Russian localization
renamed `formatters` to `providers` in docs, because that's how they're called in the code
added sphinx docs