Create HowToBuild.md
Update HowToBuild.md
Update AppsNFS.md
drivers:attach the spi01 cs.
examples:add the spi wifi example.
Merge remote-tracking branch 'remotes/remote/master'
3_networking_wifi:format the code.
3_networking_wifi:remove the note code which unused.
Merge pull request #37 from nongxiaoming/master

examples:add the spi wifi example.
Fix UART compiling issue when using RT-Thread 2.0.0 beta.
Fix RTTHREAD_VERSION issue in drv_uart.c
Update GithubGuide.md

remote address format error
Merge pull request #38 from TanekLiang/master

Update GithubGuide.md
add logtrace example
Merge pull request #39 from grissiom/logtrace-example

add logtrace example
drivers:update the uart driver,fix the bug for UART2 can not receive.
drivers:update the lcd driver to support the new version lcd.
drivers:format the code style.
Merge pull request #40 from nongxiaoming/master

update the lcd driver to support the new version lcd.