Update README.md and remove whitespaces

README.md

@@ -162,6 +162,7 @@ using matched rule and run it. Rules enabled by default:
 * `lein_not_task` – fixes wrong `lein` tasks like `lein rpl`;
 * `mkdir_p` – adds `-p` when you trying to create directory without parent;
 * `no_command` – fixes wrong console commands, for example `vom/vim`;
+* `pip_unknown_command` – fixes wrong pip commands, for example `pip instatl/pip install`;
 * `python_command` – prepends `python` when you trying to run not executable/without `./` python script;
 * `rm_dir` – adds `-rf` when you trying to remove directory;
 * `ssh_known_hosts` – removes host from `known_hosts` on warning;