Merge pull request #379 from CodeForPhilly/update-about-us-text

Update "about us" text on the website to include a mission statement and improve clarity.

Author: earth-walker

website/src/assets/text/Overview.md

@@ -1,5 +1,5 @@
 ## What We Do
 
-BDT bridges the gap between complex public benefit requirements and individual needs by helping you create lower cost decision-making tools to streamline eligibility assessments.
+Our mission is to provide free, intuitive tools that help organizations build benefit eligibility screeners for the communities they serve.
 
-Our screener builder is completely open-source, giving you superpowers without vendor lock-in.
+With the open-source BDT web app, you can easily create and maintain benefit screeners, without needing coding expertise or relying on costly software vendors.