Merge pull request #1 from vatsan/master

PL/R model save, load & parallel scoring demo
minor change for testing github
Including Vatsan's sections on persisting models in the DB
added directory to store figures
added link to documentation homepage
Updated outline
updated author list
First code integration for parallelization
First code integration for parallelization
continuing merge of parallelization section
Added notes on permissions and package installation
Added individual section files
Trying numbered lists
Changed file name
Added Alexs section on checking R package installation
Updated packages section
Fixed inline link
Added RPostgreSQL section
RPostgreSQL mods
Added data load step