update the README with required RPM packages

Signed-off-by: Alfredo Deza <[email protected]>

README

@@ -97,7 +97,11 @@ To build the documentation, ensure that you are in the top-level `/ceph director
 
 
 Build Prerequisites
--------------------
+===================
+
+
+debian-based
+------------
 To build the source code, you must install the following:
 
 - automake
@@ -132,3 +136,25 @@ To build the source code, you must install the following:
 For example:
 
 	$ apt-get install automake autoconf pkg-config gcc g++ make libboost-dev libedit-dev libssl-dev libtool libfcgi libfcgi-dev libfuse-dev linux-kernel-headers libcrypto++-dev libaio-dev libgoogle-perftools-dev libkeyutils-dev uuid-dev libatomic-ops-dev libboost-program-options-dev libboost-thread-dev libexpat1-dev libleveldb-dev libsnappy-dev libcurl4-gnutls-dev python-argparse python-flask
+
+rpm-based
+---------
+These are the rpm packages needed to install in an rpm-based OS:
+
+    autoconf
+    automake
+    gcc
+    make
+    libtool
+    python-argparse
+    python-flask
+    libuuid-devel
+    libnss-devel
+    fuse-devel
+    gperftools-devel
+    libedit-devel
+    libatomic_ops-devel
+    snappy-devel
+    leveldb-devel
+    libaio-devel
+    boost-devel