Merge "Add build/test steps to Dexter README" am: b2998ad3d3 am: fb3ac2a5b6 am: 59761488c8

Change-Id: Ib977b4851c54faf3e592cddf080e5a4e7078d2ce
diff --git a/README.md b/README.md
index 6f44981..6b8c73f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,14 @@
 This is the home of the .dex manipulation library (slicer) and command line tool (dexter).
 
 Both the command line tool and the library can be built for host and device targets.
+
+To build dexter:
+```
+$ m dexter
+```
+
+To test dexter:
+```
+# in tools/dexter (and assuming a Linux host)
+$ python dexter/dexter_tests.py -cmd ../../out/host/linux-x86/bin/dexter -root testdata
+```