docs: Add SENTRY_TRANSPORT_COMPRESSION to the README (#976) #10

Job	Run time
Xcode Build for iOS	1m 33s
Lint	22s
Linux (old gcc, 32-bit)	1m 19s
Linux (new gcc)	7m 21s
Linux (clang + asan + llvm-cov)	7m 57s
Linux (clang + kcov)	24m 29s
Linux (gcc + code-checker + valgrind)	6m 17s
macOS (xcode llvm)	12m 27s
macOS (xcode llvm + universal)	23m 59s
macOS (clang + asan + llvm-cov)	26m 15s
Windows (old VS, 32-bit)	11m 23s
Windows (latest)	9m 44s
LLVM-Mingw	13m 41s
Android (old API/NDK)	6m 47s
Android (new API/NDK)	8m 1s
Create Release Archive	16s
	2h 41m 51s

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