Update RFC feature list by Travis CI build 1597

Author: Travis CI

rfc_feature_name.txt

@@ -298,6 +298,7 @@ RFC                                                 Feature Name
 2696-debug-map-key-value.md                         debug_map_key_value
 2700-associated-constants-on-ints.md                assoc_int_consts
 2707-dotdot-patterns.md                             dotdot_patterns
+2730-cargo-token-from-process.md                    cargo_token_from_process
 2795-format-args-implicit-identifiers.md            format_args_implicits
 2797-project-ffi-unwind.md                          project-unwind-FFI
 2834-cargo-report-future-incompat.md                N/A