Add dependencies/build instructions.

README.md

@@ -2,3 +2,26 @@
 
 An attempt to create real-time in depth visualisation for neural
 networks.
+
+## Requirements
+
+The following programs/libraries need to be installed on your system:
+
+- CMake (at least 3.1)
+- Caffe
+- Google log (glog)
+- OpenCV
+- Boost System
+
+## Building
+
+The build process is based on CMake. This means you can easily create a
+build as follows. Starting from the project root:
+
+```
+mkdir build && cd build
+cmake ..
+make
+```
+
+Compilation is a little slow due to the inclusion of Boost.