https://www.sparkfun.com/products/13231
Features:
All module pins broken out
On-board LiPo charger/power supply
802.11 b/g/n
Wi-Fi Direct (P2P), soft-AP
Integrated TCP/IP protocol stack
Integrated TR switch, balun, LNA, power amplifier and matching network
Integrated PLLs, regulators, DCXO...