Update README.md to include Windows exec hint

Added some additional command line info for Windows users to get the exec command working.
Merge pull request #34 from jamsi/master

Run newrelic_aws in a daemon
fixing whitespace and removing uneeded require statement
Merge pull request #37 from newrelic-platform/jstenhouse/whitespace_changes

fixing whitespace and removing uneeded require statement
Merge pull request #18 from winzig/master

Update README.md to include Windows exec hint
removing incorrect overview examples
Merge pull request #38 from newrelic-platform/jstenhouse/updating_readme

removing incorrect overview examples
fixing cloudwatch delay for ec2
fixing cloudwatch_delay for ebs sns and sqs
Merge pull request #39 from newrelic-platform/jstenhouse/fixing_cloudwatch_delay

Jstenhouse/fixing cloudwatch delay
updating from upstream master