Fix watch if compilation fails, update README

README.md

@@ -10,6 +10,8 @@ The advantages of this tool are :
 
 * hash system to avoid time check issues (same file content, remote files problems, etc)
 
+* watch option to recompile whenever a source is changed
+
 
 ## Use
 
@@ -25,15 +27,14 @@ This repository is meant to be used as a submodule of a C/C++ project.
 
 By default 3 targets can be used `make` (or `make all` as usual default of makefiles), `make debug` and `make clean`.
 
-**Be careful** : `clean` will delete the object and binary output directories defined in `make.py`.
-
-
 **Example :** from the root folder of a project :
 
 ```
 git submodule add https://gitlab.com/corentin-pro/umake.git && cp umake/make* .
 ```
 
+Then change the configuration in `make.py` and a simple `make` command will build your project!
+
 
 ## How it works