Include existing functions

[sebastian-c]

See this message on the R Public chat.

Include code to:

• Temporarily install an R Package (@juba, Added the tmp.install.packages() function #4)
• Parse SO reputation page (@PaulHiemstra)
• Get locations of R users (@andrie)
• Read in pasted data (@mrdwab, Update readSO.R #2)

[juba]

Hi,

I just sent you a pull request to add the tmp.install.packages() function.

Many thanks for starting and coordinating this package.

Julien