Updated installation intructions for unix

INSTALL.md

@@ -18,12 +18,16 @@ You should now be able to type `adr` from the command line and see a response.
 3. Run `.\gradlew releaseJar`. This should create a file `build/releases/adr-j.jar`.
 4. Set the environment variable `ADR_HOME` to the folder where you downloaded the source code. This should contain the `build` folder. For instance this could be done by using the adding the following to the `~/.bashrc` file:
 ```
+# For example
 export ADR_HOME=~/adr-j
 ```
 
-5. Set the environment variable `EDITOR` or `VISUAL` to the location of the editor you what to use for editing the ADRs (e.g. Atom), e.g in the `~/.bashrc` file:
+5. Set the environment variable `EDITOR` or `VISUAL` to the location of the editor you what to use for editing the ADRs (e.g. Atom), e.g. in the `~/.bashrc` file:
 ```
+# For example
 export EDITOR=/usr/bin/vi
 ```
 
 6. Move `%ADR_HOME%\launch-scripts\adr` to the `~/bin` directory.
+
+Of course, there are many other ways to install adr-j on unix depending on your personal preferences; important is that the environment variables are set.