[IOTDB-221] Add C++ client

client-cpp/compile.sh

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+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+export SOURCE_DIR=src/
+export cpp_program_file_name=src/SessionExample.cpp
+export executable_file_name=Example
+
+
+if [ ! -n "$1" ] ;then
+    echo "Default output to "${executable_file_name}
+else
+    executable_file_name=$1
+    echo "Output to "${executable_file_name}
+fi
+
+if [ ! -n "$2" ] ;then
+    echo "Use the default client "${cpp_program_file_name}
+else
+    cpp_program_file_name=$2
+    echo "Use the client "${cpp_program_file_name}
+fi
+
+thrift -gen cpp -out ${SOURCE_DIR}  $(dirname $0)/../service-rpc/src/main/thrift/rpc.thrift
+rm ${SOURCE_DIR}TSIService_server.skeleton.cpp
+g++ -o ${executable_file_name} ${cpp_program_file_name}  ${SOURCE_DIR}IOTDBSession.cpp ${SOURCE_DIR}rpc_constants.cpp ${SOURCE_DIR}rpc_types.cpp ${SOURCE_DIR}TSIService.cpp -lthrift 

client-cpp/readme.md

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+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+
+# introduction
+    This module provides an example of how to connect to IoTDB with c++. 
+    You need to write your own program referring to src/SessionExample.cpp
+
+## Requirement
+    Using this module requires you to install thrift(0.11.0 or later). 
+    Below is the official tutorial of installation:
+```
+http://thrift.apache.org/docs/install/
+```
+## Compile
+    You need to mimic src/SessionExample.cpp to write a program to use the interface you need. 
+    After you have written it, run compile.sh to generate the executable.
+    Use the following command to generate an executable file:
+    ./compile.sh executable_file_name cpp_program_file_name
+e.g.
+
+    ./compile.sh Example src/SessionExample.cpp
+