Add readme dealing with translations

- Clarify relation between individual repositories containing
translations
- Explain how to use zanata interface on a few important use-cases

README.translations

@@ -0,0 +1,29 @@
+Setroubleshoot translations currently live in the following locations:
+
+- https://fedora.zanata.org/project/view/setroubleshoot
+  - contains translations for both stable (RHEL) and master (Fedora) branches
+  - maintains large number of languages (several of which do not actually contain any translated strings)
+  - updated by community and partially by RH localization effort
+
+- setroubleshoot source repositories (https://pagure.io/setroubleshoot and https://github.com/fedora-selinux/setroubleshoot)
+  - is kept up-to-date with fedora.zanata
+
+How to update source files on fedora.zanata:
+  $ git clone git@github.com:fedora-selinux/setroubleshoot.git
+  $ cd setroubleshoot/framework
+    # Update Makefile
+  $ ./autogen.sh
+    # generate new potfile
+  $ cd po
+  $ make setroubleshoot.pot
+    # Repeat the process for plugins
+    # Push potfiles to zanata
+  $ zanata-cli push --push-type source
+
+How to pull new translations from zanata
+  $ git clone git@github.com:fedora-selinux/setroubleshoot.git
+  $ cd setroubleshoot
+    # Make sure "zanata.xml" file pointing to corresponding translations branch is present
+    # Optionally update source files on zanata
+    # Pull new translations from zanata
+  $ zanata-cli -e pull --pull-type trans