Add basic info in MD file

Author: blumu

README.md

@@ -2,3 +2,22 @@ NppColumnSort
 =============
 
 Column sorting plugin for Notepad++
+
+Implements TextPad-like text sorting feature for Notepad++.
+(http://notepad-plus-plus.org/)
+
+The plugin lets you define a sort criterion based on an unlimited number of columns. For each column the comparison can be either numerical or lexicographical.
+
+More information at:  http://william.famille-blum.org/blog/index.php?entry=entry110123-113226
+
+Installation
+--------------
+
+Under the Notepad++ Plugin Manager look for "Column Sorting" plugin and click install.
+
+Manual install
+-----------------
+You first need to build the project in Visual Studio. To install the plugin just copy the DLL under 'Unicode Release' to the Notepad++ plugin directory: 
+
+> %ProgramFiles(x86)%\Notepad++\plugins for Windows 64bit;
+> %ProgramFiles%\Notepad++\plugins for Windows 32bit.