Fix examples. (#102)
* Fix ex2 and ex4 builds
* Update unsupported target SDK version.
* Update usage of deprecated API of instrumentation registry.
* Update apk path in tutorial.
diff --git a/examples/ex2_espresso/README.md b/examples/ex2_espresso/README.md
index 03973d1..b43507a 100644
--- a/examples/ex2_espresso/README.md
+++ b/examples/ex2_espresso/README.md
@@ -111,7 +111,7 @@
1. Install the apk on your phone
- adb install -r ./examples/ex2_espresso/build/outputs/apk/debug/ex2_espresso-snippet-debug.apk
+ adb install -r ./examples/ex2_espresso/build/outputs/apk/snippet/debug/ex2_espresso-snippet-debug.apk
1. Use `snippet_shell` from mobly to trigger `pushMainButton()`: