Merge pull request #20 from everydayhero/md_single_quote_string

Use single quote string literals.
Revert "Use single quote string literals."

This reverts commit 9fdb86ef5f7a633670603003010a83058cdda5e6.
Merge pull request #22 from everydayhero/revert/9fdb86e

Revert "Use single quote string literals."