improve description and spacing

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branch : HEAD

README

diff --git a/README b/README
index 1946b85..94bde23 100644
--- a/README
+++ b/README
@@ -1,9 +1,12 @@
-  This is libzip, a C library for reading, creating, and modifying
-zip archives.
+  This is libzip, a C library for reading, creating, and modifying zip
+archives.  Files can be added from data buffers, files, or compressed
+data copied directly from other zip archives.  Changes made without
+closing the archive can be reverted.  The API is documented by man
+pages.
 
-  For more information, take a look at the included man pages. You
-can start with libzip(3), which lists all others. Example source
-code is in the src/ subdirectory.
+  For more information, take a look at the included man pages.  You
+can start with libzip(3), which lists all others.  Example source code
+is in the src/ subdirectory.
 
   For generic installation instructions, see file `INSTALL'.