Updated several keyboard folders to use new keymap naming scheme

keyboard/atreus/Makefile

@@ -53,9 +53,9 @@ TARGET_DIR = .
 SRC = atreus.c
 
 ifdef KEYMAP
-    SRC := keymaps/keymap_$(KEYMAP).c $(SRC)
+    SRC := keymaps/$(KEYMAP).c $(SRC)
 else
-    SRC := keymaps/keymap_default.c $(SRC)
+    SRC := keymaps/default.c $(SRC)
 endif
 
 ifdef TEENSY2

keyboard/atreus/README.md

@@ -177,10 +177,10 @@ Depending on which keymap you would like to use, you will have to compile slight
 To build with the default keymap, simply run `make`.
 
 ### Other Keymaps
-Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create file named `keymap_<name>.c` and see keymap document (you can find in top README.md) and existent keymap files.
+Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create file named `<name>.c` and see keymap document (you can find in top README.md) and existent keymap files.
 
 To build the firmware binary hex file with a keymap just do `make` with `KEYMAP` option like:
 ```
 $ make KEYMAP=[default|jack|<name>]
 ```
-Keymaps follow the format **__keymap\_\<name\>.c__** and are stored in the `keymaps` folder.
+Keymaps follow the format **__\<name\>.c__** and are stored in the `keymaps` folder.