Removed delay from spi_transfer funct

Removed waiting potential delay of 10 microseconds  on functions
bcm2835_spi_transfer
bcm2835_spi_transfernb
Forced cs_change to 0

Forced cs change to 0 to be sure Pi hardware will not drive the GPIO
since it is manually driven in the driver
Corrected bug on CE1 pin

CE1 GPIO pin is 7 not 9
Rewritten with native C linux functions

Rewritten with native C linux functions
changed RX and TX address
forced reconfig at init
Updated and Bug Fixes

Bug fixed on dynamic payloads SPI reading
Incorporated latest BCM2835 updates
Updated documentation

Updated documentation
Fixed bug on librf24-bcm

Fixed bug on librf24-bcm
New file forked also

New file forked also
Connection table display problem

Connection table display problem
Update readme.md
Merge branch 'bcm'

Conflicts:
	librf24-rpi/librf24-bcm/examples/pingtest.cpp
	librf24-rpi/librf24-bcm/examples/rpi-hub.cpp
	librf24-rpi/readme.md