Add .gitattributes from RabbitMQ.Client

Author: lukebakken

.gitattributes

@@ -0,0 +1,13 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Auto detect text files and perform LF normalization
+*.cs text=auto
+*.txt text=auto
+
+# Declare files that will always have CRLF line endings on checkout.
+*.sln text eol=crlf
+*.csproj text eol=crlf
+
+# Custom for Visual Studio
+*.cs diff=csharp