Fix Pods menu not showing in Gravity Forms Form Settings menu
Close #18

- Check for GF Add-On Framework and add Pods GF Add-On on plugins_loaded instead of init (too late)
- Bump version number
Merge pull request #19 from naomicbush/issue/18

Fix Pods menu not showing in Gravity Forms Form Settings menu
Move screenshots into assets folder
Change screenshot urls in readme
Updated tested version and required versions
Composer tweaks from Pods 3.x composer.json
Fix typo in gf_dynamic_select()
Check that form is a Pods form before adding Pods entry meta

Fix #20
Merge pull request #21 from naomicbush/issue/20

Check that form is a Pods form before adding Pods entry meta