Update README.md

$ git branch
* master
  removals
$ ls
README   hello.rb more.txt test.txt
$ git merge removals
Updating 8bd6d8b..8f7c949
Fast-forward
 more.txt |    1 -
 test.txt |    1 -
 2 files changed, 0 insertions(+), 2 deletions(-)
 delete mode 100644 more.txt
 delete mode 100644 test.txt
$ ls
README   hello.rb