Added build instructions to readme file

README.md

@@ -1,4 +1,18 @@
 phpstorm-deb
 ============
 
-Skeleton to easily create a .deb package for phpstorm
+Skeleton to easily create a .deb package for phpstorm
+
+
+How to create new phpstorm debian package based on this project
+===============================================================
+
+* Download the .tar.gz file from this webpage http://www.jetbrains.com/phpstorm/download/index.html
+* Move the file into the directory where this file is in.
+
+* See if version number the top entry in file debian/changelog is the same as the version you've downloaded. If it's not, execute 
+ dch -v <new-version-number> -m "New upstream version"
+
+* Build the package with this command:
+ debuild -us -uc -b
+