Update readme #459

Job	Run time
fuzzing	5m 20s
codecov	1m 23s
linux_checks (Debug, Default, Valgrind)	9m 14s
linux_archs (i386)	1m 43s
linux_clang_latest	2m 45s
linux_gcc_latest	3m 21s
linux_archs (arm32v7)	12m 22s
linux_archs (arm64v8)	13m 55s
linux_checks (Debug, Default, Sanitizer)	1m 13s
linux_archs (ppc64le)	10m 35s
linux_gcc4	51s
linux_checks (Debug, ReduceBinary, Valgrind)	8m 2s
linux_gcc5_i386	1m 26s
linux_archs (s390x)	12m 4s
linux_checks (Debug, ReduceBinary, Sanitizer)	1m 1s
linux_archs (riscv64)	13m 30s
linux_checks (Release, Default, Valgrind)	2m 31s
linux_opts (gcc, no_fp)	42s
linux_checks (Release, Default, Sanitizer)	1m 28s
linux_tinycc	35s
linux_opts (gcc, no_reader)	21s
linux_checks (Release, ReduceBinary, Valgrind)	6m 52s
macos_clang	31s
linux_opts (gcc, no_writer)	33s
linux_checks (Release, ReduceBinary, Sanitizer)	1m 14s
linux_opts (gcc, no_utf8)	47s
windows_msvc	1m 38s
linux_checks (MinSizeRel, Default, Valgrind)	3m 52s
linux_opts (clang, no_fp)	57s
linux_checks (MinSizeRel, Default, Sanitizer)	1m 23s
linux_opts (clang, no_reader)	25s
linux_checks (MinSizeRel, ReduceBinary, Valgrind)	6m 41s
linux_opts (clang, no_writer)	52s
linux_checks (MinSizeRel, ReduceBinary, Sanitizer)	1m 31s
linux_opts (clang, no_utf8)	43s
	2h 12m 21s

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