plugin now uses api; updated calc list

git-svn-id: https://plugins.svn.wordpress.org/calculatorpro-calculators/trunk@967023 b8457f37-d9ea-0310-8a92-e5e31aec5664
wording changes to readme

git-svn-id: https://plugins.svn.wordpress.org/calculatorpro-calculators/trunk@967024 b8457f37-d9ea-0310-8a92-e5e31aec5664
removed extra period

git-svn-id: https://plugins.svn.wordpress.org/calculatorpro-calculators/trunk@967025 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated version - redesign and fixed php warning

git-svn-id: https://plugins.svn.wordpress.org/calculatorpro-calculators/trunk@967026 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated version - redesign and fixed php warning

git-svn-id: https://plugins.svn.wordpress.org/calculatorpro-calculators/trunk@967027 b8457f37-d9ea-0310-8a92-e5e31aec5664