Update README.md, better formatting

GX-PAW/README.md

@@ -1,10 +1,8 @@
 ## GreenX library - PAW 
 
-From our original PAW implementation, we have devel-
-oped a portable PAW library, called LIBPAW in order to
+From our original PAW implementation, we have developed a portable PAW library, called LIBPAW in order to
 facilitate the porting of PAW in other codes. This library provides
-a formalism for computational physics — the pseudopo-
-tential/PAW approach — at a relatively high implementation
+a formalism for computational physics — the pseudopotential/PAW approach — at a relatively high implementation
 level (not only low-level methods, such as I/O, error-handling
 or systems resolution). It is packaged in such a way that it
 gives access to implementations of core PAW procedures with