docs: add logos & include in README (#150)

Author: uniqueg

README.md

@@ -1,4 +1,4 @@
-# FOCA
+# ![FOCA_logo][foca-logo]  _Develop Flask microservices quickly!_
 
 [![License][badge-license]][badge-url-license]
 [![Build_status][badge-build-status]][badge-url-build-status]
@@ -7,10 +7,6 @@
 [![GitHub_tag][badge-github-tag]][badge-url-github-tag]
 [![PyPI_release][badge-pypi]][badge-url-pypi]
 
-_Quickly develop Flask microservices!_
-
-## Description
-
 **FOCA** (**F**lask-**O**penAPI-**C**onnexion-**A**rchetype) is an opinionated
 archetype that enables fast development of [OpenAPI][res-openapi]-based HTTP
 API microservices in [Flask][res-flask], leveraging the excellent
@@ -36,7 +32,6 @@ Check the [API docs][badge-url-docs] for further details.
 
 ## Table of Contents
 
-* [Description](#description)
 * [Usage](#usage)
 * [Configuration](#configuration)
   * [Configuring OpenAPI specifications](#configuring-openapi-specifications)
@@ -594,6 +589,7 @@ question etc.
 [docs-models-security]: <https://foca.readthedocs.io/en/latest/modules/foca.models.html#foca.models.config.SecurityConfig>
 [docs-models-server]: <https://foca.readthedocs.io/en/latest/modules/foca.models.html#foca.models.config.ServerConfig>
 [example]: examples/petstore/README.md
+[foca-logo]: images/foca_logo_192px.png
 [img-hint]: images/hint.svg
 [img-logo-banner]: images/logo-banner.svg
 [license]: LICENSE