Issues #32, #2 and #4: We have NFC tags reading for the two types of tags we have so far.
It works on nexus tablet and galaxy 3 phone.
I didn't create a library as #4 request, but a simple activity. I will do if we need to complexify the code.
Expected tag format follows the one used on QR codes, but as explained in issue #33 wireless configuration doesn't work.
The format is yaml with the following parameters:
 * URL (ROS master URI)
 * CURL (control URI, no idea what is this used for)
 * WIFI (SSID)
 * WIFIENC (WIFI encoding)
 * WIFIPW (WIFI password)
Maybe is time to update this, following issue #33.