Updated About.txt

lenxdart authored
revision 2a5029f5f94fa42e75400abfc57c6b7d42512c67
About
### Welcome to your project!

- Brush up on Markdown: http://daringfireball.net/projects/markdown/basics
- Learn about Penflip: [penflip.com/help](http://www.penflip.com/help)
- Talk to a person: support@penflip.com
RBT
**Residence-Based Taxation: A Necessary and Urgent Tax Reform**
Working Paper, updated March 2013, submitted to the International Tax Reform Working Group of the Ways and Means Committee