Problems with proxy config when using Rails via Install Scripts

When installing rails using install scripts to the root directory, the proxy directive stored in apache is incorrect. A trailing / is required.

i.e.
ProxyPass / http://localhost:3002/
ProxyPassReverse / http://localhost:3002/

instead of

ProxyPass / http://localhost:3002
ProxyPassReverse / http://localhost:3002

Other scripts such as Radiant that use rails that install to the root all seem to include the trailing slash correctly.