Add install instructions for FreeBSD
Merge pull request #311 from lwhsu/freebsd-install

Add install instructions for FreeBSD
Add note to keep quoted expressions to a minimum
Update 11.markdown
Fix iex docs examples
Fix deprecated octal syntax

refs
elixir-lang/elixir#2598
elixir-lang/elixir@6874eb7ce8bb89c74abe6819bed994cb776bf397
Fix KV.Bucket worker spec
Merge pull request #313 from edgurgel/patch-1

Fix KV.Bucket worker spec
Add logger to docs
Release v0.15.0
Merge pull request #312 from niku/octal-syntax

Fix deprecated octal syntax
Update to v0.15.0
Use String.to_integer/1
Add links to mailing list and issues tracker
v0.15.0 announcement
Link to Windows installer
Add Elixir Web Installer notes to the post
Incorporate @alco feedback
Merge pull request #314 from elixir-lang/jv-0-15-0

v0.15.0 announcement
Fixes to the announcement