Merge pull request #450 from Giacom/master

Added DM (Dream Maker) language.

lib/linguist/languages.yml

@@ -326,6 +326,14 @@ D-ObjDump:
   type: data
   lexer: d-objdump
   primary_extension: .d-objdump
+  
+DM:
+  type: programming
+  color: "#075ff1"
+  lexer: Text only
+  primary_extension: .dm
+  aliases:
+  - byond
 
 DOT:
   type: programming
@@ -354,7 +362,7 @@ DCPU-16 ASM:
   - .dasm
   aliases:
   - dasm16
-
+  
 Diff:
   primary_extension: .diff