README fix

README.md

@@ -16,7 +16,15 @@ Untar mcia-irods-utils to some temporary directory. From this directory, you can
 ./install.sh [--prefix=</some/prefix>]
 ```
 
-By default, install script will make the installation in `/usr/local`.Some iRODS iCommands have been wrapped to allow server-side wildcards to be used in a similar way than shell expansion.
+By default, install script will make the installation in `/usr/local`.
+
+In case you provided a prefix, make sure `/some/prefix/bin` is in your `PATH`.
+
+# Use
+
+## Wildcards Commands
+
+Some iRODS iCommands have been wrapped to allow server-side wildcards to be used in a similar way than shell expansion.
 
 * `ilsw`
 * `igetw`