Add standard .gitattributes file, to avoid line ending problems.

- Add a standard .gitattributes file, generated by the GitHub client app for Windows.

- Fix some wonky line endings which Visual Studio detected in ConfigurationServices.cs

.gitattributes

@@ -0,0 +1,17 @@
+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Custom for Visual Studio
+*.cs     diff=csharp
+
+# Standard to msysgit
+*.doc	 diff=astextplain
+*.DOC	 diff=astextplain
+*.docx diff=astextplain
+*.DOCX diff=astextplain
+*.dot  diff=astextplain
+*.DOT  diff=astextplain
+*.pdf  diff=astextplain
+*.PDF	 diff=astextplain
+*.rtf	 diff=astextplain
+*.RTF	 diff=astextplain

csharp/Adapter/Microsoft.Spark.CSharp/Configuration/ConfigurationService.cs

@@ -19,7 +19,7 @@ namespace Microsoft.Spark.CSharp.Configuration
     /// to be used in SparkCLR runtime
     /// </summary>
     internal class ConfigurationService : IConfigurationService
-    {
+    {
         private ILoggerService logger = LoggerServiceFactory.GetLogger(typeof(ConfigurationService));
         private SparkCLRConfiguration configuration;
         private RunMode runMode = RunMode.UNKNOWN; //not used anywhere for now but may come handy in the future
@@ -51,8 +51,8 @@ namespace Microsoft.Spark.CSharp.Configuration
                 configuration = new SparkCLRConfiguration(appConfig);
                 runMode = RunMode.CLUSTER;
             }
-            else if (sparkMaster.StartsWith("yarn"))
-            {
+            else if (sparkMaster.StartsWith("yarn"))
+            {
                 runMode = RunMode.YARN;
                 throw new NotSupportedException("YARN is not currently supported");
             }