Update LoadApkFragment.java

Author: Teja Vojjala

source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadApkFragment.java

@@ -9,6 +9,7 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.support.v4.content.ContextCompat;
+import android.content.pm.PackageInfo;
 import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.LayoutInflater;