Feature/app data buffer check (#79)

* Added comments and buffer overflow checks

* Removed backslashs from C-code.

src/bacnet/basic/object/bv.c

@@ -422,7 +422,7 @@ bool Binary_Value_Write_Property(BACNET_WRITE_PROPERTY_DATA *wp_data)
     if (wp_data == NULL) {
         return false;
     }
-    if ((wp_data->application_data == NULL) || \
+    if ((wp_data->application_data == NULL) ||
         (wp_data->application_data_len == 0)) {
         return false;
     }