Adding hideSoftKeyboard for android, updating package.json and updating appium-adb submodule

lib/devices/android/android-controller.js

@@ -677,8 +677,16 @@ androidController.setLocation = function (latitude, longitude, altitude, horizon
   });
 };
 
+// keyName parameter only used for iOS. Please ignore it for android.
 androidController.hideKeyboard = function (keyName, cb) {
-  cb(new NotYetImplementedError(), null);
+  this.adb.isSoftKeyboardPresent(function (err, isKeyboardPresent) {
+    if (err) return cb(err);
+    if (isKeyboardPresent) {
+      this.back(cb);
+    } else {
+      return cb(new Error("Soft keyboard not present, cannot hide keyboard"));
+    }
+  }.bind(this));
 };
 
 androidController.url = function (url, cb) {

package.json

@@ -41,7 +41,7 @@
   },
   "dependencies": {
     "adm-zip": "~0.4.4",
-    "appium-adb": "~1.0.1",
+    "appium-adb": "~1.0.2",
     "appium-atoms": "~0.0.5",
     "appium-instruments": "~1.0.0",
     "appium-uiauto": "~1.0.0",