Add a section for known issues

Document the issues with the emulator and gingerbread

Change-Id: Ic60fcbbabb6d8bc46b0dcd5e250859b5ff7d1e60
diff --git a/src/source/sidebar.md b/src/source/sidebar.md
index 31d782b..362eb04 100644
--- a/src/source/sidebar.md
+++ b/src/source/sidebar.md
@@ -4,6 +4,7 @@
 - [Downloading the Source](downloading.html)
 - [Building and Running](building.html)
 - [Building for Devices](building-devices.html)
+- [Known Issues](known-issues.html)
 
 # Navigating the Source #