improve README layout

README.md

@@ -124,10 +124,6 @@ Check out these projects our awesome community has created:
 
 - ["CS 101 - An Introduction to Computational Thinking"](https://itunes.apple.com/us/book/id1435714196) - a computer science textbook by Sarbo Roy.
 
-## Contribute
-
-PRs welcome! Please see our [CONTRIBUTING.md](https://github.com/carbon-app/carbon/blob/master/.github/CONTRIBUTING.md) for more details.
-
 ## Authors
 
 Carbon is a project by:
@@ -136,7 +132,11 @@ Carbon is a project by:
 - Brian Dennis ([@briandennis](https://github.com/briandennis))
 - Jake Dexheimer ([@jakedex](https://github.com/jakedex))
 
-## Support
+---
+
+## Contribute & Support
+
+Pull requests are welcome! Please see our [contributing guidelines](https://github.com/carbon-app/carbon/blob/master/.github/CONTRIBUTING.md) for more details.
 
 ### Sponsors
 
@@ -164,7 +164,7 @@ Love using Carbon? Consider supporting the project to fund new features and impr
 
 ### Contributors
 
-![](https://opencollective.com/carbon-app/contributors.svg?width=1024)
+![Contributors image](https://opencollective.com/carbon-app/contributors.svg?width=1024)
 
 #### All Contributors