Add license and align package.xml with rslidar_sdk

LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2020 RoboSense
+All rights reserved
+
+By downloading, copying, installing or using the software you agree to this license. If you do not agree to this license, do not download, install, copy or use the software.
+
+License Agreement
+For RoboSense LiDAR SDK Library
+(3-clause BSD License)
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+3. Neither the names of the RoboSense, nor Suteng Innovation Technology, nor the names of other contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+

package.xml

@@ -2,11 +2,10 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>rslidar_msg</name>
-  <version>0.0.0</version>
-  <description>TODO: Package description</description>
+  <version>1.3.0</version>
+  <description>Messages for the rslidar_sdk package</description>
   <maintainer email="zdxiao@robosense.cn">robosense</maintainer>
-  <license>TODO: License declaration</license>
-
+  <license>BSD</license>
   <buildtool_depend>ament_cmake</buildtool_depend>
 
   <depend>std_msgs</depend>
@@ -22,7 +21,7 @@
 
   <exec_depend>rosidl_default_runtime</exec_depend>
 
-<member_of_group>rosidl_interface_packages</member_of_group>
+  <member_of_group>rosidl_interface_packages</member_of_group>
   <export>
     <build_type>ament_cmake</build_type>
   </export>