updated app readmes for #1311 (#91)

* updated app readmes for #1311

* more readme udpates

* more readme udpates

* restructuring mean drift dir

Author: kmruehl

Body-to-Body_Interactions/README.md

@@ -2,10 +2,10 @@
 
 **Author:**  	Kelley Ruehl
 
-**Geometry:**	RM3
-
 **Original Version:** 	WEC-Sim v2.2
 
+**Geometry:**	RM3
+
 **Description**	
 
 Example using [Body-to-Body (B2B)](https://wec-sim.github.io/WEC-Sim/main/user/advanced_features.html#body-to-body-interactions) to run WEC-Sim for the RM3 geometry. The scripts run and plot the RM3 model with B2B on/off and with Regular/RegularCIC. Execute the `runB2B.m` script to run this case. 

Controls/README.md

@@ -0,0 +1,14 @@
+# Controls
+
+**Author:**	Jeff Grasberger and Ratanak So
+
+**Description**
+
+Examples using WEC-Sim with controls
+
+* Declutching - control with optimal declutching time
+* Latching - control with optimal latching time
+* MPC - model predictive controller (MPC)
+* Passive (P) - control with optimal proportional gain
+* Reactive (PI) - control with optimal proportional and integral gains
+* Reactive with PTO - reactive controller and simple direct drive power take-off (PTO)