Add stack overflow illustration

Add stack overflow illustration

Small example of a possible buffer overflow that can occur

Add file write program

Add example program which illustrate disadvantages of concurrency

Some basic wrapper for pthread_create and pthread_join

Add source code for memory virtualization illustration

Add chapter 2 virtualizing memory code

Add chapter 2 virtualizing memory code

WIP

Started on chapter code

Create separate input and output file directories

Add TODOs

added wzip per file version + updated wgretline to work in edge cases

Update README