1. Update the installing methods in manual.
2. Remove the traditional installing way of Windows in manual.
3. Fix the bugs in CMake.

1. Offer macro to set whether use the half precision in cuda codes.
2. Update the manuals.

Update the minimum version of CUDA from 9.0 to 9.2.

1. Fix the mistakes in manual.
2. Fix the minor errors in Stack and LogSoftmax functions.

1. Fix the mistakes in manual.
2. Fix the minor errors in Normalize and ScaleAndShift functions.

1. Fix the mistakes in manual.
2. Fix the bug in the link process of ConvertDataType function.

1. Fix the mistakes in manual. By the way, I have to say there are so many mistakes in the manual. I'm shocked it has been checked a lot of times, but why they are still be there. No one care about that? Really???
2. Clean the codes.

1. Offer CMakeLists.txt to compile the NiuTensor.
2. Update the manuals for CMake.

Update the link in manual.

Update the manual.

1. add macro to implement unary function 2. add sub and div function 3. merge code with the latest branch of xiaotong-working