Update README.md

Changed the title of the repo in the readme
Update README.md

Forgot to update the title in both places.
updated text above image slider and style on homepage
Updated text and style of content in welcome box on the science explorer.
Merge branch 'master' of https://github.com/jlucido2/glri-catalog into develop

* 'master' of https://github.com/jlucido2/glri-catalog:
  Update README.md
  Update README.md
Merge pull request #145 from jlucido2/master

Text and style changes