conf change: pid: all pid details are now camelCase

Convert all PID configuration details are now camelCase instead of snake
case.

Change-Id: Id132053f122dfcd8abaace17df91c99758eb2b0c
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/examples/swampd.conf b/examples/swampd.conf
index fd492ee..0866c5b 100644
--- a/examples/swampd.conf
+++ b/examples/swampd.conf
@@ -75,21 +75,21 @@
         )
         set-point = 90.0
         pid = {
-          sampleperiod = 0.1
-          p_coefficient = 0.01
-          i_coefficient = 0.001
-          ff_off_coefficient = 0.0
-          ff_gain_coefficient = 0.0
-          i_limit = {
+          samplePeriod = 0.1
+          proportionalCoeff = 0.01
+          integralCoeff = 0.001
+          feedFwdOffOffsetCoeff = 0.0
+          feedFwdGainCoeff = 0.0
+          integralCoeff = {
             min: 0.0
             max: 100.0
           }
-          out_limit = {
+          outLimit = {
             min: 0.0
             max: 100.0
           }
-          slew_neg = 0.0
-          slew_pos = 0.0
+          slewNeg = 0.0
+          slewPos = 0.0
         }
       }
     )