Added some more ASM languages and Squirrel.

a/assembler_masm_dos.asm

@@ -0,0 +1,17 @@
+; 16 bit dos assembly
+.model small
+.stack
+.data
+    message   db "Hello world!", "$"
+.code
+    main    proc
+        mov   ax,seg message
+        mov   ds,ax
+        mov   ah,09
+        lea   dx,message
+        int   21h
+        
+        mov   ax,4c00h
+        int   21h
+    main    endp
+end main