wip, adding support to toggle printer model, and other settings, via …

…config.xml. Need to figure out how to set PriterInfo.printerModel from the config (lines 201 and 301 of this commit)

README.md

@@ -26,7 +26,11 @@ __Tested models:__ `QL-720NW`
 
 (if you have tried this with other models, please update this list and send a pull request)
 
-__NOTE:__ Currently, you will need to adjust the `modelName` variable in `src/android/BrotherPrinter.java`. It is the first variable in the `BrotherPrinter` class. This could be extended to be configured through config.xml or via a JS call, but it's currently hard-coded. Feel free to send a pull request to make the configuration more extensible... 
+__NOTE:__ You must set the model name via `config.xml` preferences, using the example below... If no value is set, the default is `QL-720NW`.
+
+```xml
+    <preference name="brother-label-printer-model" value="QL-720NW"/>
+```
 
 
 ## Supported interfaces (by this plugin):

src/android/BrotherPrinter.java

@@ -47,7 +47,11 @@
 
 public class BrotherPrinter extends CordovaPlugin {
 
-    String modelName = "QL-720NW";
+    String modelName = cordova.getActivity().getIntent().getStringExtra("brother-label-printer-model");
+    if (modelName == null) {
+        modelName = "QL-720NW";
+    }
+
     private NetPrinter[] netPrinters;
 
     private String ipAddress   = null;
@@ -238,7 +242,6 @@ public void run() {
         });
     }
 
-
     private void sendUSBConfig(final JSONArray args, final CallbackContext callbackctx){
 
         cordova.getThreadPool().execute(new Runnable() {