Added "Other packages" section (#724)

* Added "Other packages" section

* Typos

* Minor

* Require Beta2

Author: Nyholm

README.md

@@ -127,6 +127,15 @@ Provider       | Package | Features | Stats
 [TomTom](https://github.com/geocoder-php/tomtom-provider) | `geocoder-php/tomtom-provider` | address, reverse <br> [Website](https://geocoder.tomtom.com/app/view/index) | [![Latest Stable Version](https://poser.pugx.org/geocoder-php/tomtom-provider/v/stable)](https://packagist.org/packages/geocoder-php/tomtom-provider) <br>[![Total Downloads](https://poser.pugx.org/geocoder-php/tomtom-provider/downloads)](https://packagist.org/packages/geocoder-php/tomtom-provider)
 [Yandex](https://github.com/geocoder-php/yandex-provider) | `geocoder-php/yandex-provider` | address, reverse <br> [Website](http://api.yandex.com/maps/) | [![Latest Stable Version](https://poser.pugx.org/geocoder-php/yandex-provider/v/stable)](https://packagist.org/packages/geocoder-php/yandex-provider) <br>[![Total Downloads](https://poser.pugx.org/geocoder-php/yandex-provider/downloads)](https://packagist.org/packages/geocoder-php/yandex-provider)
 
+#### Other packages
+
+There are two "*abstract*" or "*base*" packages that most providers depend on.
+
+Name       | Package | Features | Stats
+:--------- |:------- |:-------- |:-------
+[PHP common](https://github.com/geocoder-php/php-common) | `willdurand/geocoderr` | Models, interfaces, exceptions etc | [![Latest Stable Version](https://poser.pugx.org/willdurand/geocoder/v/stable)](https://packagist.org/packages/willdurand/geocoder) <br>[![Total Downloads](https://poser.pugx.org/willdurand/geocoder/downloads)](https://packagist.org/packages/willdurand/geocoder)
+[HTTP common](https://github.com/geocoder-php/php-common-http) | `geocoder-php/common-http` | `AbstractHttpProcider`, HTTPlug | [![Latest Stable Version](https://poser.pugx.org/geocoder-php/common-http/v/stable)](https://packagist.org/packages/geocoder-php/common-http) <br>[![Total Downloads](https://poser.pugx.org/geocoder-php/common-http/downloads)](https://packagist.org/packages/geocoder-php/common-http)
+
 Special Geocoders and Providers
 -------------------------------
 

src/Provider/Cache/.travis.yml

@@ -3,7 +3,6 @@ sudo: false
 
 php: 7.0
 
-
 install:
   - composer update --prefer-stable --prefer-dist
 
@@ -13,4 +12,3 @@ script:
 after_success:
     - wget https://scrutinizer-ci.com/ocular.phar
     - php ocular.phar code-coverage:upload --format=php-clover build/coverage.xml
-

src/Provider/Cache/composer.json

@@ -14,7 +14,7 @@
     "require": {
         "php": "^7.0",
         "psr/simple-cache": "^1.0",
-        "willdurand/geocoder": "^4.0"
+        "willdurand/geocoder": "^4.0.0-beta2"
     },
     "require-dev": {
         "phpunit/phpunit": "^6.1"