Doc change: add new samples TOC groups and landing pages.

Change-Id: I2f39e82fb79d4f19362d9fe2deafdde5d87873a7
diff --git a/Android.mk b/Android.mk
index 5a585e5..54ca200 100644
--- a/Android.mk
+++ b/Android.mk
@@ -548,7 +548,9 @@
                  -samplegroup Content \
                  -samplegroup Input \
                  -samplegroup Media \
+                 -samplegroup RenderScript \
                  -samplegroup Security \
+                 -samplegroup Sensors \
                  -samplegroup Testing \
                  -samplegroup UI \
                  -samplegroup Views