fix(#549): EditorConfig settings for sln files

Author: adamrodger

.editorconfig

@@ -2,25 +2,18 @@ root = true
 
 # All files
 [*]
+indent_size = 4
+tab_width = 4
 indent_style = space
+insert_final_newline = true
 trim_trailing_whitespace = true
 
 # Xml files
 [*.{config,csproj,targets,xml}]
 indent_size = 2
 
-# C# files
-[*.cs]
-
-#### Core EditorConfig Options ####
-
-# Indentation and spacing
-indent_size = 4
-tab_width = 4
-
-# New line preferences
-end_of_line = crlf
-insert_final_newline =true
+[*.{cs,sln}]
+end_of_line=crlf
 
 #### .NET Coding Conventions ####
 [*.{cs,vb}]