Merge remote-tracking branch 'origin/master' into issue-575_write-group

Author: DomCR

README.md

@@ -47,9 +47,11 @@ private static void onNotification(object sender, NotificationEventArgs e)
 }
 ```
 
-For more examples [check](https://github.com/DomCR/ACadSharp/tree/master/src/ACadSharp.Examples).
+For more code examples [check](https://github.com/DomCR/ACadSharp/tree/master/src/ACadSharp.Examples).
 
-For more information visit the :construction: [wiki](https://github.com/DomCR/ACadSharp/wiki) :construction: .
+Visit the :construction: [wiki](https://github.com/DomCR/ACadSharp/wiki) :construction: for the API specification of the library.
+
+Check the [documentation](https://github.com/DomCR/ACadSharp/tree/master/docs/) for specific information about some use cases.
 
 Building
 ---

docs/CadDocumentDocs.md

@@ -0,0 +1,45 @@
+# ACadSharp
+
+ACadSharp is a pure C# library to read/write cad files like dxf/dwg.
+
+## Quick Start
+
+### Read
+
+If you want to read a cad file you just need to pick the reader that matches the format, for dwg files you can use [`ACadSharp.IO.DwgReader`](https://github.com/DomCR/ACadSharp/wiki/ACadSharp.IO.DwgReader) or [`ACadSharp.IO.DxfReader`](https://github.com/DomCR/ACadSharp/wiki/ACadSharp.IO.DxfReader) for a dxf file.
+
+The following example shows how to use the `DwgReader` using the static `Read()` method, the `DxfReader` has the equivalent method as well.
+
+```C#
+CadDocument doc = DwgReader.Read(file);
+```
+
+Both readers have a parameter to configure the reader behaviour and a notification system to log information about possible issues that may occur during the read operation, for more information check [CadReader](./CadReaderDocs.md).
+
+### Document operations
+
+Once you have read the [``CadDocument``](https://github.com/DomCR/ACadSharp/wiki/ACadSharp.CadDocument) or created a new one, you can perform any operation that you may need:
+
+- Check or modify the existing entities and extract any information like geometry, color, layer, lineType...  
+- Create new entities in the model.
+- Create new table entries like Layers, LineTypes, Blocks...
+- Add, read or remove ``XData`` in any object in the document. 
+
+For more information about how the CadDocument is structured check [CadDocument](./CadDocumentDocs.md).
+
+To understand the common properties of the different elements in the document check the documentation for the different types of objects:
+- [CadObject](./CadObjectDocs.md)
+  - [Entity](./EntityDocs.md)
+  - [NonGraphicalObject](./NonGraphicalObjectDocs.md)
+  - [TableEntry](./TableEntryDocs.md)
+  
+### Write
+
+Save your file using the [``DwgWriter``](https://github.com/DomCR/ACadSharp/wiki/ACadSharp.IO.DwgWriter) or [``DxfWriter``](https://github.com/DomCR/ACadSharp/wiki/ACadSharp.IO.DxfWriter) depending on the format that you want to use.
+
+```C#
+string file = "your file path";
+DwgWriter.Write(file, doc);
+```
+
+Similar as with the `CadReader` the `CadWriter` have a configuration and a notification system, for more information check [CadReader](./CadWriterDocs.md).