5558 Add features, installation and more sections to readme, thanks @sriesterer

Author: avstudnitz

README.md

@@ -1,2 +1,82 @@
-# solr-magento1-base
-Free Solr Module for Magento 1 for greatly improved search results
+![IntegerNet_Solr Logo](https://www.integer-net.de/wp-content/uploads/2012/11/integernet-solr-logo-small.png)
+
+# IntegerNet_Solr Free
+This is a free extension to integrate Solr as a product search in an online store running on Magento Community 
+Edition 1.7 - 1.9.
+
+## Features
+
+### Fast Search Results
+The main feature of this is extension is the integration of Solr as a product search in your Magento store. 
+Solr is a lot faster as a search engine than Magento's native MySQL search. Also, the search algorith is better, 
+so search results are more relevant.
+
+### Fuzzy Search
+The search algorithm performs a fuzzy search to help with usability. When you have typos or misspellings in 
+your search request, the fuzzy search will look for similar words, increasing the chance of finding a match. 
+
+### Boost Products or Attributes
+
+Use your catalog search as a marketing feature to increase the sales of certain products. You can either select 
+individual or a bunch of products to boost, or you can boost an attribute. Whenever one of these boosted 
+products or attributes are a match with the search term, they are ranked higher than usual.
+
+## Requirements
+- Magento Community Edition 1.7 to 1.9
+- Solr 4.x to 6.x
+- PHP 5.3 to 7.0 
+
+## Installation 
+1. Install Solr and create at least one working core
+2. Copy the files from the solr_conf dir of the module repository to the conf dir of your Solr core
+3. Reload the Solr core (or all of Solr)
+4. (If activated: deactivate the Magento compiler)
+5. If using **Composer**: Just add "integer-net/solr-magento1" to the list of requirements in your composer.json.
+**Otherwise**: Download the archive from the [Releases Page](https://github.com/integer-net/solr-magento1/releases). 
+Copy the files and directories from the src directory of the module repository into your Magento installation.
+**Attention**: You will need the files of two more repositories: The 
+[IntegerNet_Solr base library](https://github.com/integer-net/solr-base) and the 
+[Aoe_LayoutConditions module](https://github.com/AOEpeople/Aoe_LayoutConditions). They are already contained in 
+the release archive.
+6. Clear the Magento cache
+7. (Recompile and reactivate the Magento compiler – it is not recommended to use the compiler mode of Magento, 
+independent of the IntegerNet_Solr module)
+8. Go to the Magento backend, go to System -> Configuration -> Solr
+9. Enter the Solr access data and configure the module (see 
+[Documentation](https://www.integer-net.com/solr-magento/documentation/) for more information - you will also 
+find an explanation there about how to find out the correct access data)
+10. Click "Save Configuration". The connection to the Solr server will automatically be tested. You’ll get a 
+success or error message about that.
+11. Reindex the integernet\_solr index. We recommend doing this via shell. Go to the shell dir and call 
+`php -f indexer.php -- --reindex integernet_solr`
+12. Submit a search request with a slight typo on your page. The search result page should show matching products.
+
+## Configuration
+The extension comes with a complete installation and configuration guide. Every configuration option is 
+explained. You can find it on our website: 
+**[Documentation](https://www.integer-net.com/solr-magento/documentation/)**
+
+## Modification
+You are welcome to modify the extension as you like. To make it easier, we have implemented a number of events. 
+For a quick start and an example, please have a look at our blog post: 
+[How to Use Events to Tweak Solr Search](https://www.integer-net.com/utilizing-events-of-integernet_solr-an-example/)
+
+## License
+The extension IntegerNet_Solr Free is published under the license GNU Lesser Public General License (LGPL v3). 
+You can find the license in the file [License](https://github.com/integer-net/solr-magento1/blob/master/LICENSE). 
+For more information and an explanation of this license, please see the following article: 
+[Information on GNU Lesser General Public License](https://www.gnu.org/licenses/lgpl-3.0.en.html)
+
+## Contributing
+If you would like to contribute to this extension, please fork the repository. 
+Any pull requests are warmly welcome.
+
+## Support
+Please note that this is a free extension. We do not provide individual customer support for this extension. 
+If you find a bug, please open a GitHub issue.
+
+## Upgrade
+IntegerNet\_Solr Free is an offspring of **IntegerNet_Solr Pro**, our powerful Solr extension for Magento. 
+It offers more features, such as an extensive autosuggest window, multiselect filters, product lists in 
+categories loaded via Solr and support of Magento Enterprise Edition. For more information, please visit our 
+[website](https://www.integer-net.com/solr-magento/).