Update README to clarify rsync exclusion option
m1.small has been deprecated in us-east-1 - although the t-class instance types are cheaper they only support hvm - m3.medium is the smallest instance type to support both paravirtualization and hvm AMIs
Merge pull request #280 from ankushnarula/hotfix/fix-default-instance-type

m1.small has been deprecated in us-east-1
Updated README to use Ruby syntax for excluding multiple files and directories from rsync.
Merge pull request #277 from mypetyak/master

Update README to clarify rsync exclusion option