Small changes to README.md
Remove prepositions, update name
Format corrections, correct name
Update continuous integration section
Fix text break, add link for NUnit
Correct markdown link
Shorten title, correct section case
Merge pull request #258 from brodyberg/edit_readme

Edits to README.md
update signed dlls
Unicode letters & operators

examples:
let ★ x = x + 5
let (|★) x y = x + y
let summ = ★ 5 |★ 5
comment about \So infix operators
apply & merge optimizations from : https://github.com/jack-pappas/fs-core-optimized , thanks to Jack Pappas
revert set.fs optimizations due complicated conflicts