Added readme file with build instructions

README.md

@@ -0,0 +1,26 @@
+# Requirements
+
+  * fpm ruby gem
+  * dpkg for debian packages
+  * rpm for centos packages
+
+In debian/ubuntu rpm can be installed. The package is called "rpm"
+
+
+# Bump version
+
+The version should be changed in gen_package.sh and oneapps/share/version.rb
+
+
+# Generate packages
+
+Execute these commands as root so the files in the package are owned by root.
+
+## RPM
+
+    $ PACKAGE_TYPE=rpm ./gen_package.sh
+
+## DEB
+
+    $ PACKAGE_TYPE=deb ./gen_package.sh
+