Use Codec::Out instead of the final type for clarity and consistency

* Remove an unncessary `return` keyword
* Remove an unnecessary `&` wrapper
* Use `EasyBuf::as_s...

These are identical since rust-lang/rust#37094 landed, and
`extend_from_slice` will be deprecate...

Fix 'going deeper' docs mistakes

This fixes a few small grammar and spelling mistakes that I encountered
while reading the "Going...

Closes #39

Improve reactor prose

Fix typos

its -> it's in reactor.md

Fix is_prime example

Closes #34

tokio-0-1.md - misspellings

This includes changes to the header, the main section of the homepage,
and the jumbotron section...

Add a missing import

Various sundry typos and whatnot

fix grammar in code sample comment

Fix typo in reactor docs

Add link for blog RSS feed so browsers can see it

Minor plural typo

Minor prose editing for db example

Fixing typos

Fixing typo in third-party.md

fix typo

Indicate current page in single page/blog post side nav

third-party: Fix a typo and reword inotify/signal

"allows abstraction Unix signals" doesn't parse, and I think it's simpler to
make both the inoti...

Thrussh is completely based on tokio since 0.8

(and tested with other protocols like postgres, although not with tokio-postgres).

Fix typo in simple-server docs

Update README.md

typo and small grammar fix

one typo, one area where i think that the current wording is a bit confusing

fix typo

Also fill in some TODO links