Create Dependencies.md

Dependencies.md

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+##List of Known Dependencies
+###ORB-SLAM Monocular 1.0.1
+
+In this document we list all the pieces of code included  by ORB-SLAM Monocular and linked libraries which are not property of the authors of ORB-SLAM Monocular.
+
+
+#####Code in **src** and **include** folders
+
+* *ORBextractor.cc*.
+This is a modified version of orb.cpp of OpenCV library. The original code is BSD licensed.
+
+* *PnPsolver.h, PnPsolver.cc*.
+This is a modified version of the epnp.h and epnp.cc of Vincent Lepetit. 
+This code can be found in popular BSD licensed computer vision libraries as [OpenCV](https://github.com/Itseez/opencv/blob/master/modules/calib3d/src/epnp.cpp) and [OpenGV](https://github.com/laurentkneip/opengv/blob/master/src/absolute_pose/modules/Epnp.cpp). The original code is FreeBSD.
+
+* Function *ORBmatcher::DescriptorDistance* in *ORBmatcher.cc*.
+The code is from: http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel.
+The code is in the public domain.
+
+#####Code in Thirdparty folder
+
+* All code in **DBoW2** folder.
+This is a modified version of [DBoW2](https://github.com/dorian3d/DBoW2) and [DLib](https://github.com/dorian3d/DLib) library. All files included are BSD licensed.
+
+* All code in **g2o** folder.
+This is a modified version of [g2o](https://github.com/RainerKuemmerle/g2o). All files included are BSD licensed.
+
+#####Library dependencies 
+
+* **Boost**. [Boost Software License](http://www.boost.org/users/license.html).
+
+* **OpenCV**.
+BSD licensed.
+
+* **Eigen3**.
+For versions greater than 3.1.1 is MPL2, earlier versions are LGPLv3.
+
+* **BLAS** (required by g2o).
+[Freely-available software](http://www.netlib.org/blas/#_licensing).
+
+* **LAPACK**(required by g2o).
+BSD licensed. 
+
+* **ROS**.
+BSD licensed. In the manifest.xml the only declared package dependencies are roscpp, tf, sensor_msgs, opencv2, image_transport, cv_bridge, which are all BSD licensed.
+
+
+
+Updated: 19/01/2016 Raúl Mur Artal