Update README

Signed-off-by: Diego Pasqualin <dpasqualin@c3sl.ufpr.br>

README

 This is the Linux Educacional 5 unstable repository.
 
-INSTALL (Ubuntu/Debian based systems):
-    make
-    dpkg -i $(ls ./*.deb | sort | tail -n1)
+The bin/ directory contains a serie of helper scripts, to build, publish or
+do different tasks related to LE.
 
-INSTALL (Others systems):
-    make
-    make install
+All other directories contain the source code for packages that are part of
+the LE project.