Make dual shooter.

Abstracted some stuff to get two shooters running in
the same process.

Change-Id: Id7617d6cf0d90c28fe2c07aefd3896eb592575dc
diff --git a/y2016/control_loops/python/shooter.py b/y2016/control_loops/python/shooter.py
old mode 100644
new mode 100755
index f34a1f1..e47add9
--- a/y2016/control_loops/python/shooter.py
+++ b/y2016/control_loops/python/shooter.py
@@ -31,6 +31,7 @@
     self.dt = 0.005
 
     # State feedback matrices
+    # [position, angular velocity]
     self.A_continuous = numpy.matrix(
         [[0, 1],
          [0, -self.Kt / self.Kv / (self.J * self.G * self.G * self.R)]])