more README :D

README

+### Installing
+
+* copy mergetool to a locaton `<pathto>`
+* Add this to your .git/config or ~/.gitconfig:
+
+    [merge "po-merge"]
+      name = Gettext merge driver
+      driver = <patho> %O %A %B
+
+Add this to .gitattributes in some dir:
+
+    *.po   merge=po-merge
+    *.pot  merge=po-merge
+
+### Testing
+
+run: ipython3 -i runtests.py
+
+    In [18]: runTest("translated-remote")
+    Using custom PO merge driver (local; /tmp/merge-po.JIyZ)
+    0
+    0
+
+    In [19]: runTest("translated-local-and-remote")
+    Using custom PO merge driver (local; /tmp/merge-po.lZsH)
+    0
+    0
+
+
+    In [22]: runTest("confict")
+    Using custom PO merge driver (local; /tmp/merge-po.7FoH)
+    Conflict(s) detected
+       between /tmp/merge-po.7FoH.local and /tmp/merge-po.7FoH.remote
+    1
+    --- /tmp/tmp5cbetvbs/local      2018-03-22 16:40:55.000000000 +0100
+    +++ tests/confict/merged        2018-03-22 16:40:51.954196950 +0100
+    @@ -27,9 +27,9 @@
+     "> **amnesia**, *noun*:<br/>\n"
+     "> forgetfulness; loss of long-term memory.\n"
+     msgstr ""
+    -"#-#-#-#-#  merge-po.7FoH.local-only (Tails)  #-#-#-#-#\n"
+    +"#-#-#-#-#  merge-po.PE9w.local-only (Tails)  #-#-#-#-#\n"
+     "> Je ne sais pas \n"
+    -"#-#-#-#-#  merge-po.7FoH.remote-only (Tails)  #-#-#-#-#\n"
+    +"#-#-#-#-#  merge-po.PE9w.remote-only (Tails)  #-#-#-#-#\n"
+     "Un deuxième traduction."
+
+     #. type: Plain text
+    1
+
+### Documentation
+
+I didn't have written the different po merge tools. I found them at the internet :D
+
 https://stackoverflow.com/questions/16214067/wheres-the-3-way-git-merge-driver-for-po-gettext-files
 https://github.com/mezis/git-whistles/blob/master/libexec/git-merge-po.sh