Added app.config to specify location of graphviz folder

Author: JamieDixon

src/GraphVizWrapper.Tests/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <appSettings>
+    <add key="graphVizLocation" value="c:\Graphviz"/>
+  </appSettings>
+</configuration>

src/GraphVizWrapper.Tests/GraphVizWrapper.Tests.csproj

@@ -56,6 +56,7 @@
     <Compile Include="Tests.cs" />
   </ItemGroup>
   <ItemGroup>
+    <None Include="App.config" />
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>

src/GraphVizWrapper/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <appSettings>
+    <add key="graphVizLocation" value="c:\Graphviz"/>
+  </appSettings>
+</configuration>

src/GraphVizWrapper/GraphGeneration.cs

@@ -11,11 +11,12 @@ namespace GraphVizWrapper
 {
     using System;
     using System.Collections.Generic;
+    using System.Configuration;
     using System.IO;
     using System.Reflection;
-
-    using GraphVizWrapper.Commands;
-    using GraphVizWrapper.Queries;
+    
+    using Commands;
+    using Queries;
 
     /// <summary>
     /// The main entry class for the wrapper.
@@ -36,6 +37,8 @@ public GraphGeneration(IGetStartProcessQuery startProcessQuery, IGetProcessStart
             this.startProcessQuery = startProcessQuery;
             this.getProcessStartInfoQuery = getProcessStartInfoQuery;
             this.registerLayoutPlugincommand = registerLayoutPlugincommand;
+
+            this.graphvizPath = ConfigurationManager.AppSettings["graphVizLocation"];
         }
 
         #region Properties
@@ -110,6 +113,7 @@ private string FilePath
         /// </returns>
         public byte[] GenerateGraph(string dotFile, Enums.GraphReturnType returnType)
         {
+
             byte[] output;
 
             if (!ConfigExists)

src/GraphVizWrapper/GraphVizWrapper.csproj

@@ -32,6 +32,7 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
+    <Reference Include="System.configuration" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
@@ -55,7 +56,9 @@
     <Compile Include="Queries\IGetProcessStartInfoQuery.cs" />
     <Compile Include="Queries\IGetStartProcessQuery.cs" />
   </ItemGroup>
-  <ItemGroup />
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.