complementary: Add Eigen dependency

Fixes CCNYRoboticsLab#54.

Author: mintar

imu_complementary_filter/package.xml

@@ -12,11 +12,13 @@
 
   <buildtool_depend>catkin</buildtool_depend>
   <build_depend>cmake_modules</build_depend>
+  <build_depend>eigen</build_depend>
   <build_depend>message_filters</build_depend>
   <build_depend>roscpp</build_depend>
   <build_depend>sensor_msgs</build_depend>
   <build_depend>std_msgs</build_depend>
   <build_depend>tf</build_depend>
+  <run_depend>eigen</run_depend>
   <run_depend>message_filters</run_depend>
   <run_depend>roscpp</run_depend>
   <run_depend>sensor_msgs</run_depend>