Fixes to string-based filters

git-svn-id: https://plugins.svn.wordpress.org/syntegrate-chart-for-salesforce/trunk@861007 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme changes

git-svn-id: https://plugins.svn.wordpress.org/syntegrate-chart-for-salesforce/trunk@861608 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme changes

git-svn-id: https://plugins.svn.wordpress.org/syntegrate-chart-for-salesforce/trunk@862460 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme changes

git-svn-id: https://plugins.svn.wordpress.org/syntegrate-chart-for-salesforce/trunk@862461 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme changes

git-svn-id: https://plugins.svn.wordpress.org/syntegrate-chart-for-salesforce/trunk@862462 b8457f37-d9ea-0310-8a92-e5e31aec5664