fix the grammar in the readme

better fine tuning url in the doc

add readme update for showing how this model was created, what it looks like in the header, and that it takes ~80s to merge 5 models

initial release for the tinyllama merged model with 32k context: TinyLlama/TinyLlama-1.1B-intermediate-step-1431k-3T + Doctor-Shotgun/TinyLlama-1.1B-32k-Instruct + Doctor-Shotgun/TinyLlama-1.1B-32k + Tensoic/TinyLlama-1.1B-3T-openhermes + Josephgflowers/TinyLlama-3T-Cinder-v1.3

initial commit