docs: remove deprecated command

We prefer the `git pr` syntax over calling the executable directly. For this reason we remove the references to the executable.

README.md

@@ -35,6 +35,8 @@ source .venv/bin/activate
 pip install pull-request-codecommit
 ```
 
+You need to add the `.venv/bin/` path to your system `PATH`. This is needed for the `git pr` commands to function.
+
 ## Configuration
 
 The tool uses the following file `~/.aws/pull-request-codecommit`. It will first load the `default` profile and then, if
@@ -52,12 +54,6 @@ branch=develop
 
 To use `pull-request-codecommit` you just execute the following command:
 
-```bash
-pull-request-codecommit
-```
-
-Or:
-
 ```bash
 git pr
 ```
@@ -66,12 +62,6 @@ git pr
 
 In some cases it makes sense to directly merge the pull request, in those cases you can use:
 
-```bash
-pull-request-codecommit --auto-merge
-```
-
-Or:
-
 ```bash
 git pr --auto-merge
 ```
@@ -94,12 +84,6 @@ When a pull requests exists a proposal is made to update the existing pull reque
 
 When you want to overwrite the target branch you need to supply the `--branch <name>` option:
 
-```bash
-pull-request-codecommit --branch my-target-branch
-```
-
-Or:
-
 ```bash
 git pr --branch my-target-branch
 ```