README.md

FFmpeg iOS build script

This is a shell script to build FFmpeg libraries for iOS apps.

Tested with:

To build everything:
```
  ./build-ffmpeg.sh
```
To build arm64 libraries:
```
  ./build-ffmpeg.sh arm64
```
To build fat libraries for armv7 and x86_64 (64-bit simulator):
```
  ./build-ffmpeg.sh armv7 x86_64
```
To build fat libraries from separately built thin libraries:
```
  ./build-ffmpeg.sh lipo
```