Merge pull request #1 from driabwb/master

pull
Update CMakeLists.txt
Update pid.py
Delete pid.py
Update and rename projectImageReg.cpp to hotshot_image.cpp
Update control.py
Update and rename control.py to hotshot_control.py
Update CMakeLists.txt
Update README.md
Update hotshaut.launch
Rename hotshaut.launch to hotshot.launch
Rename src/hotshot_control.py to scripts/hotshot_control.py
Update README.md
Update hotshot.launch
Merge pull request #2 from nbellowe/patch-2

Patch 2
Update hotshot_control.py
Update hotshot_control.py
Merge pull request #5 from nbellowe/master

Merge Nathan's work