Added mode_convert and documentation. Created new .mb filetype which contains all necessary information for operating on simulation cells. Created framework for reading in data files, right now only .mb style files

src/call_mode.f90

@@ -3,6 +3,7 @@ subroutine call_mode(arg_num,mode)
     !mode module.
 
     use mode_create
+    use mode_convert
     use parameters
 
     implicit none    
@@ -12,8 +13,9 @@ subroutine call_mode(arg_num,mode)
 
     select case(mode)
     case('--create')
-        call create()
-
+        call create
+    case('--convert')
+        call convert    
     case default
         print *, "Mode ", mode, " currently not accepted. Please check documentation for ", &
                  "accepted modes and rerun."