Attempt to fix readme

README.md

@@ -14,16 +14,14 @@ You can use the example application of the addon for projection mapping projects
 1. Put your own sources in the `example/bin/data/sources` directory. Use [Handbrake](https://handbrake.fr/) with the **Fast 720p30** preset to encode your videos. 
 
 2. Compile and run the example project.
-
     ```bash
-cd openFrameworks/addons/ofxPiMapper/example
-make && ./bin/example
+    cd openFrameworks/addons/ofxPiMapper/example
+    make && ./bin/example
     ```
 
 3. Use the `-f` flag to launch it fullscreen.
-
     ```bash
-./bin/example -f
+    ./bin/example -f
     ```