Build script now removes TEX files
Broke up notebook into chapters containing each step

IPython notebook document was getting much too large so I broke up the notebook into individual components. When doing this, I fixed the URLs reference to point to the resourcs (png or mp4) on Github instead of locally
Removed output of full notebook
No longer output TEX or PDF because PDF is not formatting well
Merge branch 'chapters' of https://github.com/ceholden/landsat_preprocess into chapters

Merging change to build.sh from master branch to remove TEX outputs