Updating install process.

README.md

@@ -33,3 +33,10 @@ roslaunch blam_example test_offline.launch
 
 An example .rviz configuration file is provided under
 `blam_example/rviz/lidar_slam.rviz`.
+
+## Dependencies
+
+***BLAM!*** relies on system installations of the following packages:
+
+* [ROS](http://wiki.ros.org/ROS/Installation)
+* [GTSAM](https://collab.cc.gatech.edu/borg/gtsam)

external/blam-external.rosinstall

@@ -1,4 +0,0 @@
-- git:
-    local-name: gtsam_ros
-    uri: https://github.com/erik-nelson/gtsam_ros.git
-    version: master

update

@@ -11,8 +11,10 @@ fi
 wstool merge -t src blam-external.rosinstall
 wstool up -t src
 catkin_make_isolated --install --cmake-args -DCMAKE_BUILD_TYPE=Release
-touch ${TOP_DIR}/external/install_isolated/.catkin
-source ${TOP_DIR}/external/install_isolated/setup.bash
+if [ ! -d "./install_isolated" ]; then
+  touch ./install_isolated/.catkin
+  source ./install_isolated/setup.bash
+fi
 
 # Compile BLAM packages.
 cd ${TOP_DIR}/internal