Add Documentation related to Stack trace
Add Documentation related to Stack trace

Taken and adapted from Rahul's notes on gitter

rahulmutt/ghcvm,alexander-at-github/eta,pparkkin/eta,AlexeyRaga/eta,rahulmutt/ghcvm,AlexeyRaga/eta,pparkkin/eta,alexander-at-github/eta,alexander-at-github/eta,rahulmutt/ghcvm,AlexeyRaga/eta,pparkkin/eta,alexander-at-github/eta,pparkkin/eta,rahulmutt/ghcvm,AlexeyRaga/eta,alexander-at-github/eta,AlexeyRaga/eta,rahulmutt/ghcvm,pparkkin/eta