Update README.md

[minhazur-piash]

Creating symbolic link of vf_gltransition.c in libavfilter using ln-s causes build process to stop with error "make: *** No rule to make target libavfilter/vf_gltransition.c', needed by libavfilter/vf_gltransition.o'. Stop."

Better to copy vf_gltransition.c into libavfilter

[transitive-bullshit]

Interesting -- what platform are you experiencing this on?

I'm not opposed to making this change; I just want to understand why I haven't seen this before.

[minhazur-piash]

Hi,
I am using mac with High Sierra. I am not sure about the exact reason either but copying instead of creating symbolic link helped me to get rid of that error.
By the way, on mac without yasm and pkg-config build process will fail too.

[transitive-bullshit]

Finally got around to this -- thanks!!

[minhazur-piash]

Thanks, much appreciated.