v0.1.0

* Build a Sinatra app (#1)
* Add `init` proc config to `Deas::Server` (#2)
* Add common Sinatra configuration options (#3)
* Add basic `logger` option to `Deas::Server` (#5)
* Define routes on `Deas::Server` (#6)
* Add handler and runner pattern for view handlers (#7)
* Add system tests using rack-test (#8)
* Symbolize template names (#13)
* Add partial helper for rendering templates (#14)
* Add support for layouts (#15)
* Add escaping helpers for rendering templates (#17)
* Add `show_exceptions` option to `Deas::Server` (#19)
* Add request logging (#16)
* Add render helper for rendering non-partial templates (#18)
* Add handler helpers for sessions and redirecting (#22)
* Add ability to mixin render helpers (#23)