Merge remote-tracking branch 'origin/master'

README.md

@@ -50,6 +50,7 @@ Here is a complete snippet of it usage:
 new FingerAuthDialog(this)
         .setTitle("Sign in")
         .setCancelable(false)
+        .setMaxFailedCount(3) // Number of attemps
         .setPositiveButton("Use password", new DialogInterface.OnClickListener() {
             @Override
             public void onClick(DialogInterface dialogInterface, int i) {
@@ -71,6 +72,39 @@ new FingerAuthDialog(this)
             public void onError() {
                 Toast.makeText(MainActivity.this, "onError", Toast.LENGTH_SHORT).show();
             }
+        })
+        .show();
+```
+
+Show dialog only on devices that support fingerprint auth:
+
+```java
+boolean hasFingerprintSupport = FingerAuth.hasFingerprintSupport(this);
+
+if (hasFingerprintSupport)
+    fingerAuthDialog.show();
+```
+
+### Implementing your own method
+
+```java
+new FingerAuth(this)
+        .setMaxFailedCount(3) // Number of attemps
+        .setOnFingerAuthListener(new FingerAuth.OnFingerAuthListener() {
+            @Override
+            public void onSuccess() {
+                // do something
+            }
+
+            @Override
+            public void onFailure() {
+                // do something
+            }
+
+            @Override
+            public void onError() {
+                // do something
+            }
         });
 ```