Auto merge of #56 - cldershem:patch-6, r=japaric

Updates code to match docs.

Code didn't match docs. `FACTOR` changed to `SENSITIVITY`. Also a small typo fix.

Author: homunkulus

src/16-punch-o-meter/gravity-is-up.md

@@ -65,6 +65,6 @@ the Earth with an acceleration of `1 g` but from its point of view the board is
 actually moving upwards (away from the center of the Earth) with an acceleration
 of `1 g`. And that's why the proper acceleration is pointing up. This also means
 that if the board was in free fall, the accelerometer would report a "proper"
-acceleration of zero. Please, don't try that home.
+acceleration of zero. Please, don't try that at home.
 
 Yes, physics is hard. Let's move on.

src/16-punch-o-meter/src/main.rs

@@ -12,13 +12,13 @@ use pg::{delay, lsm303dlhc};
 #[no_mangle]
 pub fn main() -> ! {
     loop {
-        const FACTOR: f32 = 8. / ((1 << 15) as f32);
+        const SENSITIVITY: f32 = 8. / ((1 << 15) as f32);
 
         let I16x3 { x, y, z } = lsm303dlhc::acceleration();
 
-        let x = f32::from(x) * FACTOR;
-        let y = f32::from(y) * FACTOR;
-        let z = f32::from(z) * FACTOR;
+        let x = f32::from(x) * SENSITIVITY;
+        let y = f32::from(y) * SENSITIVITY;
+        let z = f32::from(z) * SENSITIVITY;
 
         iprintln!("{:?}", (x, y, z));