add build and install document of fluid inference library

Balance parameter opt

Add author

* Build: add test_word2vec test_image_classification as dependencies of test_paddle_inference_api_impl.

* Fix build error when WITH_TESTING is OFF.

Fix dev image build on nodes of yq

Fix bug in "paddle/fluid/framework/tensor_impl.h" and inefficient code in "paddle/fluid/framework/reader.cc"

fix transpiler package

make infer test more stable.

* WIP move weight decay

* weight decay ok

* wip

* clean up transpiler

* add details folder

* update

* fix split var test

* follow comments

Fluid guide img

Withdraw MKLDNN Mul operator

Fix compile error on mac caused by std move

fix compiler error when do not have TensorRT library

Simplify and make clear function names on Machine Translation example

* initial commit

* modify rnn_encoder_docoder example

Fix contribution doc

better profiler and benchmark

fix two bugs