Add AppVeyor build status badge to readme (#39)

* Keep track of any error cases encountered when attempting to deminify a StackFrame. Instead of returning a list of StackFrames in DeminifyStackTraceResult, we will return a StackFrameDeminificationResult, which contains the deminified StackFrame as well as an enum indicating if any error cases were hit. This result can be used to help provide information of any error cases in the SourceMapToolkit without having to debug.

* Updating documentation.

* Missed merges

* Add back StackFrameDeminifierUnitTests with test coverage to make sure StackFrameDeminificationResults are recorded correctly.

* Undo hint path for nuget packages from local box

* Fix up SourceMapToolkil csproj

* Documentation cleanup

* fix type in documentation

* Do not do Bitwise or on DeminificationError, since the Flags attribute was removed in a previous commit. Additionally update the NoFunctionMapProvided error to be NoSourceCodeProvided since FunctionMap is not

* If we fail to get the deminified stackframe method, we shouldn't attempt to get the source position or file path

* Remove hard coded local nugetcache path

* Revert readme to line up with upstream repository

* Update Readme file to contain AppVeyor badge

Update Readme file to contain AppVeyor build status

README.md

@@ -1,4 +1,4 @@
-# Source Map Toolkit
+# Source Map Toolkit [![Build status](https://ci.appveyor.com/api/projects/status/8ydsci6e4v80n6c0?svg=true)](https://ci.appveyor.com/project/thomabr/sourcemap-toolkit)
 This is a C# library for working with JavaScript source maps and deminifying JavaScript callstacks.
 
 ## Source Map Parsing
@@ -133,4 +133,4 @@ The unit tests for this library leverage the functionality provided by [Rhino Mo
 ## License
 Copyright (c) Microsoft Corporation. All rights reserved.
 
-Licensed under the [MIT](LICENSE.txt) License.
+Licensed under the [MIT](LICENSE.txt) License.