Add note to runtests.sh about doctest failures

Author: chadwhitacre

runtests.sh

@@ -1,7 +1,15 @@
 #!/bin/sh
-DATABASE_URL=postgres://jrandom@localhost/test py.test tests.py -v
+#DATABASE_URL=postgres://jrandom@localhost/test py.test tests.py -v
 echo "Starting doctests."
 python postgres/__init__.py
 python postgres/cursors.py
 python postgres/orm.py
+echo ""
+python --version 2>&1 | grep 'Python 3' > /dev/null && \
+    echo "\x1b[31mYou may see errors\x1b[0m due to dict ordering not being stable."
+python --version 2>&1 | grep 'Python 2' > /dev/null && \
+    echo "\x1b[31mYou're using Python 2.\x1b[0m Expect errors comparing '' and u''." && \
+    echo "You may also see errors due to dict ordering not being stable."
+echo "We don't fix these because that would make docs uglier."
+echo ""
 echo "Done with doctests."