Add Read Mes to the Simulink Example Models

[dack-fe]

Model Read Mes:

• [ ] Beamer
• [x] HA_sys8
• [x] bitcrusher
• [x] delay_and_sum_beamformer
• [x] dpr_interface
• [x] echo
• [x] fast_fourier_transfrom
• [x] fft_filters
• [x] flanger
• [x] noise_suppression
• [x] passthrough
• [x] simple_gain
• [x] simple_gain_vector
• [x] simple_hearing_aid
• [x] sound_effects

[tvannoy]

I'll take the flanger, bitcrusher, sound effects, and delay and sum beamformer readmes

[dack-fe]

@tvannoy Can you add a read me to HA_sys8?

[tvannoy]

@tvannoy Can you add a read me to HA_sys8?

@dack-fe yes, I can do that later this afternoon.

[tvannoy]

Can this be closed? The Beamer already has a README. Or are we planning on updating the Beamer's README?

[dack-fe]

I think @fe-wickham was going to review and potentially update the Beamer Read Me.