Update README.md

Author: iamMehedi

README.md

@@ -10,5 +10,60 @@ A Barcode scanning library for Android. Uses the Google Play Services' mobile vi
 - `SINGLE_MANUAL`: Detects and highlights all the barcode it can find but returns only the one that user chooses by tapping.
 - `MULTIPLE`: Detects and highlights all the barcode it can find. Returns all the barcodes on tap.
 
+###Barcode Types
+You can view [this link](https://developers.google.com/vision/barcodes-overview) for a list of supported barcode formats.
 
+###Use the standalone scanner
+launch the scanner from your `Activity` like this:
+```java
+new MVBarcodeScanner.Builder()
+                    .setScanningMode(mMode)
+                    .setFormats(mFormats)
+                    .build()
+                    .launchScanner(this, REQ_CODE);
+```
+You'll receive the scanned barcode/barcodes in your Activity's `onActivityResult`
+```java
+if (requestCode == REQ_CODE) {
+            if (resultCode == RESULT_OK && data != null
+                    && data.getExtras() != null) {
+              
+                if (data.getExtras().containsKey(MVBarcodeScanner.BarcodeObject)) {
+                    Barcode mBarcode = data.getParcelableExtra(MVBarcodeScanner.BarcodeObject);
+                } else if (data.getExtras().containsKey(MVBarcodeScanner.BarcodeObjects)) {
+                    List<Barcode> mBarcodes = data.getParcelableArrayListExtra(MVBarcodeScanner.BarcodeObjects);
+                }
+            }
+        }
+```
 
+###Use the scanner fragment
+You can use the `BarcodeCaptureFragment` to scan barcodes. Just add the fragment to your `Activity`
+```java
+MVBarcodeScanner.ScanningMode mode = null;
+@MVBarcodeScanner.BarCodeFormat int[] formats = null;
+
+BarcodeCaptureFragment fragment = BarcodeCaptureFragment.instantiate(mode, formats);
+getSupportFragmentManager().beginTransaction()
+                .add(R.id.container, fragment)
+                .commit();
+```
+Then make the the `Activity` implement the `BarcodeCaptureFragment.BarcodeScanningListener` so that you can receive results from the fragment or you can set the listener directly to the fragment
+```java
+        fragment.setListener(new BarcodeCaptureFragment.BarcodeScanningListener() {
+            @Override
+            public void onBarcodeScanned(Barcode barcode) {
+                
+            }
+
+            @Override
+            public void onBarcodesScanned(List<Barcode> barcodes) {
+
+            }
+
+            @Override
+            public void onBarcodeScanningFailed(String reason) {
+
+            }
+        });
+```