Tweaks for beta

Updated version in README plus a few other housekeeping items.
Small tweaks to source files for doc string formatting.
Merge pull request #27 from splunk/mtevenan/docspass2

Tweaks for beta
Release 0.8.1
Merge branch 'master' of https://github.com/splunk/splunk-sdk-ruby into splunk_shell_example
getters and setters for common objects