Merge pull request #53 from sash-ko/master

Chapter 2 fixes
Update README.md
Fixed few typos
Merge pull request #54 from liori/master

Fixed few typos.
Fixed typo
Merge pull request #55 from ducky427/master

Fixed a couple of typos.
Update README.md
fixed minor typos
Update Prologue.ipynb
Update Prologue.ipynb
we draw a particular outcome of a random variable, which is a random variate
Merge pull request #56 from ahane/errata-ahane

I think we draw variates and not variables
Update README.md
Fix typo on chapter 2: catagory -> category
Fix typos in Chapter 3

 * positerior -> posterior
 * ontop -> on top
 * postive -> positive
 * modelling -> modeling
 * determinsitic -> deterministic
 * assingment -> assignment
 * aboves -> above
 * re-reun -> re-run
 * opimization -> optimization
 * attemps -> attempts
 * Tt is -> It is
 * retured -> returned
 * paramter -> parameter
 * esimate -> estimate
 * algoithms -> algorithms
 * specifing -> specifying
Fix typos in Chapter 2

 * assesing -> assessing
 * Determinstic -> Deterministic
 * implicity -> implicitly
 * determinsitic -> deterministic
 * intial -> initial
 * probablistic -> probabilistic
 * amoung -> among
 * explict -> explicit
 * implicity -> implicitly
 * paramters -> parameters
 * Farhenhit -> Fahrenheit
 * ocuring -> occurring
 * probabilties -> probabilities
 * specificed -> specified
 * artifical -> artificial
Merge pull request #58 from pablooliveira/Chapter3-fixtypos

Fix typos in Chapter 3
Merge pull request #57 from pablooliveira/Chapter2-typo

Fix typos in Chapter 2
Update README.md
adding expl. to chapter 3 figures