Add "init" type to nano-hexapod

correct init type of sample
add file to initialize the stages under gravity

src/initializeNanoHexapod.m

@@ -1,7 +1,7 @@
 function [nano_hexapod] = initializeNanoHexapod(args)
 
 arguments
-    args.type      char   {mustBeMember(args.type,{'none', 'rigid', 'flexible'})} = 'flexible'
+    args.type      char   {mustBeMember(args.type,{'none', 'rigid', 'flexible', 'init'})} = 'flexible'
     % initializeFramesPositions
     args.H    (1,1) double {mustBeNumeric, mustBePositive} = 90e-3
     args.MO_B (1,1) double {mustBeNumeric} = 175e-3
@@ -61,6 +61,8 @@ switch args.type
     nano_hexapod.type = 1;
   case 'flexible'
     nano_hexapod.type = 2;
+  case 'init'
+    nano_hexapod.type = 4;
 end
 
 save('./mat/stages.mat', 'nano_hexapod', '-append');