Update readme with export (#52)

Author: nohwnd

Profiler/Profiler.psd1

@@ -111,7 +111,7 @@ PrivateData = @{
         # ReleaseNotes = ''
 
         # Prerelease string of this module
-        Prerelease = ''
+        Prerelease = 'beta1'
 
         # Flag to indicate whether the module requires explicit user acceptance for install/update/save
         # RequireLicenseAcceptance = $false

README.MD

@@ -11,12 +11,24 @@ Install-Module Profiler
 ```
 
 ```powershell
-$trace =  Trace-Script -ScriptBlock { & "demo-scripts/MyScript.ps1" }
-$trace.Top50Duration | Format-Table
+$trace =  Trace-Script -ScriptBlock { & "demo-scripts/Get-Icons.ps1" } -ExportPath icons
+$trace.Top50SelfDuration | Format-Table
 ```
 
 ![](images/Profile.jpg)
 
+Inspect the output, SelfPercent, and SelfDuration represent time that is spent only in the function, excluding all the code it calls. 
+
+Percent and Duration represent time that is takes by the function an all the code it calls.
+
+In our screenshot 98.6% of the execution time is taken by `Invoke-WebRequest`, which runs inside of `Get-EmojiInternal` function inside of `Avocado` module.
+
+You also specified export path which exports the results in https://speedscope.app format. Importing the file will show this result: 
+
+![](images/speedscope-time-order.jpg)
+
+Which shows us graphical representation of the run. We can see that two paths, `Get-Avocado` and `Get-Unicorn` both end up calling `Get-EmojiInternal` where most of the time in the script is spent.
+
 ## More Features 
 
 - Profile module functions, or any scriptblock.

csharp/Profiler/Profiler.csproj

@@ -5,6 +5,7 @@
     in unbound scriptblocks, but if we just skip them we don't need it.-->  
   <PropertyGroup Condition=" '$(PowerShellVersion)' == '' ">
     <TargetFrameworks>netstandard2.0;net452;net451</TargetFrameworks>
+	<LangVersion>Latest</LangVersion>
   </PropertyGroup>
 
  <PropertyGroup Condition=" '$(TargetFramework)' == 'net451' ">

csharp/Profiler/Tracer.cs

@@ -3,7 +3,6 @@
 using System.Management.Automation.Host;
 using System.Management.Automation.Language;
 using System.Reflection;
-using System.Threading;
 using NonGeneric = System.Collections;
 
 namespace Profiler
@@ -34,7 +33,8 @@ public static void Register(object tracer)
             if (HasTracer2)
                 throw new InvalidOperationException("Tracer2 is already present.");
 
-            _tracer2 = new ExternalTracerAdapter(tracer) ?? throw new ArgumentNullException(nameof(tracer));
+            // use tracer directly if it implements our interface, or wrap it in adapter, and call it's methods by reflection, to accomodate tracers that only match our signature but not type.
+            _tracer2 = tracer is ITracer ourTracerType ? ourTracerType : new ExternalTracerAdapter(tracer) ?? throw new ArgumentNullException(nameof(tracer));
             TraceLine(justTracer2: true);
         }