add readme

Former-commit-id: f19468d07eea35f9f7a9ffbf8462458842754d36

cpp/README.md

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+# vecwise_engine_server
+
+### Build and Install
+Firstly download zdb_server to under same parent folder with zdb_build
+
+    git clone git@192.168.1.105:jinhai/vecwise_engine.git
+
+Install necessery tools
+
+    centos7 : yum install gfortran
+    ubunut : sudo apt-install install gfortran
+
+Build third-parties
+
+    cd [sourcecode path]/cpp/thid_party
+    ./build.sh
+    
+Then run build.sh scripts under cpp folder:
+
+    cd [sourcecode path]/cpp
+    ./build.sh -t Debug
+    ./build.sh -t Release
+    
+To run unittest:
+    
+    ./build.sh -u
+    or
+    ./build.sh --unittest
+    
+    
+### Luanch server
+Set config in cpp/conf/server_config.yaml
+Then luanch server with config:
+    vecwise_engine_server -c [sourcecode path]/cpp/conf/server_config.yaml

cpp/build.sh

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+#!/bin/bash
+
+BUILD_TYPE="Debug"
+BUILD_UNITTEST="off"
+
+while getopts "p:t:uh" arg
+do
+        case $arg in
+             t)
+                BUILD_TYPE=$OPTARG # BUILD_TYPE
+                ;;
+             u)
+                echo "Build and run unittest cases" ;
+                BUILD_UNITTEST="on";
+                ;;
+             h) # help
+                echo "
+
+parameter:
+-t: build type
+-u: building unit test options
+
+usage:
+./build.sh -t \${BUILD_TYPE} [-u] [-h]
+                "
+                exit 0
+                ;;
+             ?)
+                echo "unkonw argument"
+        exit 1
+        ;;
+        esac
+done
+
+if [[ -d cmake_build ]]; then
+	rm cmake_build -r
+fi
+
+rm -rf ./cmake_build
+mkdir cmake_build
+cd cmake_build
+
+CMAKE_CMD="cmake -DBUILD_UNIT_TEST=${BUILD_UNITTEST} \
+-DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
+$@ ../"
+echo ${CMAKE_CMD}
+
+${CMAKE_CMD}
+
+make clean && make -j || exit 1
+