Cleanup exercise scripts

* whitespace and comment cleanups only

Change-Id: Iab9c2d9a25c3473f14190d60f2f2cf5be0ed59dc
diff --git a/exercises/floating_ips.sh b/exercises/floating_ips.sh
index 82f29eb..51019a3 100755
--- a/exercises/floating_ips.sh
+++ b/exercises/floating_ips.sh
@@ -83,7 +83,7 @@
     fi
 fi
 
-# determinine instance type
+# Determinine instance type
 # -------------------------
 
 # List of instance types:
@@ -100,6 +100,7 @@
 VM_UUID=`nova boot --flavor $INSTANCE_TYPE --image $IMAGE $NAME --security_groups=$SECGROUP | grep ' id ' | get_field 2`
 die_if_not_set VM_UUID "Failure launching $NAME"
 
+
 # Testing
 # =======