Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

gaia/tests/ci/unit-tests-in-firefox/install

@@ -0,0 +1,14 @@
+#! /bin/bash -ve
+make node_modules
+
+echo 'Downloading Firefox'
+DEBUG=* ./node_modules/.bin/mozilla-download --product firefox \
+                 --channel tinderbox \
+                 --branch mozilla-central \
+                 $PWD/firefox
+
+echo 'Downloading & installing node dependencies'
+make common-install
+
+echo 'Downloading xulrunner-sdk and making profile for testing (more than 5 minutes)'
+DEBUG=1 DESKTOP=0 WGET_OPTS=-nv make