Fix username rule

Author: John Cordeiro

library/src/main/java/br/com/ilhasoft/support/validation/rule/UsernameRule.java

@@ -17,7 +17,7 @@ public UsernameRule(TextView view, String errorMessage) {
     @Override
     protected boolean isValid(TextView view) {
         String username = view.getText().toString();
-        return username.matches("^[a-z0-9_-]{3,16}$");
+        return username.matches("[a-zA-Z0-9-._]+");
     }
 
     @Override

sample/src/main/res/layout/activity_main.xml

@@ -30,6 +30,20 @@
 
             </android.support.design.widget.TextInputLayout>
 
+            <android.support.design.widget.TextInputLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content">
+
+                <android.support.design.widget.TextInputEditText
+                    android:id="@+id/username"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:hint="Username"
+                    app:validateType='@{"username"}'
+                    app:validateTypeMessage="@{@string/custom_error_username}" />
+
+            </android.support.design.widget.TextInputLayout>
+
             <android.support.design.widget.TextInputLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content">

sample/src/main/res/values/strings.xml

@@ -1,5 +1,6 @@
 <resources>
     <string name="app_name">Support Validation</string>
+    <string name="custom_error_username">Custom message: Username not valid</string>
     <string name="custom_error_password_not_equal">Custom message: passwords are not equals!!</string>
     <string name="custom_error_cpf">Custom message: CPF is wrong man!</string>
     <string name="custom_error_date">Custom message: It\'s not a date!</string>