Update README.md to be more correct
Update README.md to be more correct

The README hasn't been updated with the most recent information for running the E2E tests. Removed some of the information and added a link to point to the proper wiki page.
informatics-isi-edu/chaise,informatics-isi-edu/chaise,informatics-isi-edu/chaise,informatics-isi-edu/chaise