Merge pull request #238 from samveen/add_grave

add "`" and "~" to keycode -> ASCII table

src/class/hid/hid.h

@@ -812,7 +812,7 @@ enum
     {'#'   , '~'    }, /* 0x32 */ \
     {';'   , ':'    }, /* 0x33 */ \
     {'\''  , '\"'   }, /* 0x34 */ \
-    {0     , 0      }, /* 0x35 */ \
+    {'`'   , '~'    }, /* 0x35 */ \
     {','   , '<'    }, /* 0x36 */ \
     {'.'   , '>'    }, /* 0x37 */ \
     {'/'   , '?'    }, /* 0x38 */ \