Made Unity project directory structure more plugin compliant.

Added .sln for spine-csharp that compiles under MonoDevelop.  Modifie spine-csharp.csproj to compile under MonoDevelop (mac).

.gitignore

@@ -36,3 +36,7 @@ spine-unity/Assets/src/spine-csharp/*
 spine-unity/ProjectSettings
 spine-unity/Temp
 spine-unity/Library
+*.userprefs
+*.pidb
+Assembly-*.csproj
+Assembly-*.pidb

spine-csharp/spine-csharp.csproj

@@ -1,15 +1,16 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="3.5" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <ProjectGuid>{94144E22-2431-4A8F-AC04-DEC22F7EDD8F}</ProjectGuid>
-    <ProjectTypeGuids>{6D335F3A-9D43-41b4-9D22-F6F17C4BE596};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ProductVersion>9.0.21022</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Spine</RootNamespace>
     <AssemblyName>spine-csharp</AssemblyName>
-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
     <TargetFrameworkProfile>Client</TargetFrameworkProfile>
     <XnaFrameworkVersion>v4.0</XnaFrameworkVersion>
     <XnaPlatform>Windows</XnaPlatform>
@@ -43,19 +44,12 @@
     <XnaCompressContent>true</XnaCompressContent>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="mscorlib">
-      <Private>False</Private>
-    </Reference>
-    <Reference Include="System">
-      <Private>False</Private>
-    </Reference>
+    <Reference Include="mscorlib" />
+    <Reference Include="System" />
     <Reference Include="System.Core">
       <RequiredTargetFramework>4.0</RequiredTargetFramework>
-      <Private>False</Private>
-    </Reference>
-    <Reference Include="System.Net">
-      <Private>False</Private>
     </Reference>
+    <Reference Include="System.Net" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />

spine-csharp/spine-csharp.sln

@@ -0,0 +1,20 @@
+
+Microsoft Visual Studio Solution File, Format Version 10.00
+# Visual Studio 2008
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "spine-csharp", "spine-csharp.csproj", "{E27CE91F-0B52-4A75-BE98-2FC2A8994CCE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x86 = Debug|x86
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{E27CE91F-0B52-4A75-BE98-2FC2A8994CCE}.Debug|x86.ActiveCfg = Debug|x86
+		{E27CE91F-0B52-4A75-BE98-2FC2A8994CCE}.Debug|x86.Build.0 = Debug|x86
+		{E27CE91F-0B52-4A75-BE98-2FC2A8994CCE}.Release|x86.ActiveCfg = Release|x86
+		{E27CE91F-0B52-4A75-BE98-2FC2A8994CCE}.Release|x86.Build.0 = Release|x86
+	EndGlobalSection
+	GlobalSection(MonoDevelopProperties) = preSolution
+		StartupItem = spine-csharp.csproj
+	EndGlobalSection
+EndGlobal

spine-unity/Assets/Plugins.meta

@@ -1,4 +1,4 @@
 fileFormatVersion: 2
-guid: 169f112a58a7a014eb09b87c01e426dd
+guid: 89dad76e10ea944ee9f29109535294be
 DefaultImporter:
   userData: 

spine-unity/Assets/Plugins/Editor.meta

@@ -1,4 +1,4 @@
 fileFormatVersion: 2
-guid: f65f926cf250c204a9658087bc501fab
+guid: 65ba3309ea8c447678ade95f3fa398da
 DefaultImporter:
   userData: 

spine-unity/Assets/Plugins/Editor/Spine.meta

@@ -1,4 +1,4 @@
 fileFormatVersion: 2
-guid: 411b02e44c34aea459ea6ef154df73d4
+guid: 3ac78ae082927411cba77d73efde27d4
 DefaultImporter:
   userData: 

spine-unity/Assets/Plugins/Spine.meta

@@ -0,0 +1,4 @@
+fileFormatVersion: 2
+guid: c6674329008ae4c65a7b7e8f1b2a6523
+DefaultImporter:
+  userData: 

spine-unity/Assets/Shaders.meta

@@ -0,0 +1,4 @@
+fileFormatVersion: 2
+guid: b41395738f68d4fbba8311d333db62b1
+DefaultImporter:
+  userData: