Fix markdown generation and module determination (#12)

- Fixed an issue where ConvertTo-MarkdownHelp would not add `blob/master`
  to online help URI path. Closes #10

- Fixed an issue where ConvertTo-MarkdownHelp would not create the docs
  folder if it did not already exist.  Closes #8

- Fixed an issue where Add-ModuleQualification could not determine the
  module if the current workspace did not have a manifest. Closes #9

- Fixed an issue where Add-ModuleQualification would insert the wrong
  module and command name if multiple versions of the same module were
  loaded into the current session.

Author: SeeminglyScience

module/Public/Add-ModuleQualification.ps1

@@ -25,25 +25,25 @@ function Add-ModuleQualification {
                 GetProperty('TopLevelSessionState', $flags).
                 GetValue($context)
 
-            $getCommand = { $ExecutionContext.InvokeCommand.GetCommand($commandName, 'All') }
+            $getCommand = { $ExecutionContext.InvokeCommand.GetCommand($args[0], 'All') }
 
             $null = [scriptblock].
                 GetProperty('SessionStateInternal', $flags).
                 SetValue($getCommand, $globalState)
 
             $PSCmdlet.WriteVerbose($Strings.InferringFromSession)
 
-            $command = $getCommand.InvokeReturnAsIs()
+            $command = $getCommand.InvokeReturnAsIs($commandName)
 
             if ($command) { return $command }
 
             $PSCmdlet.WriteVerbose($Strings.InferringFromWorkspace)
             try {
                 $manifest = GetInferredManifest
                 if (($moduleInfo = Get-Module $manifest.Name -ErrorAction Ignore)) {
-                    return $moduleInfo.Invoke(
-                        { $ExecutionContext.SessionState.InvokeCommand.GetCommand($args[0], 'All') },
-                        $commandName)
+                    # Retrieve command info from the first returned module incase multiple versions
+                    # are loaded into the session.
+                    return $moduleInfo[0].Invoke($getCommand, $commandName)
                 }
                 $isExport = $manifest.FunctionsToExport -contains $commandName -or
                             $manifest.CmdletsToExport   -contains $commandName

module/Public/ConvertTo-MarkdownHelp.ps1

@@ -24,7 +24,10 @@ function ConvertTo-MarkdownHelp {
                 $docsPath,
                 $psEditor.Workspace.Path)
 
-            $onlineUri = $projectUri, $normalizedDocs, ($Ast.Name + '.md') -join '/' -replace '\\', '/'
+            $onlineUri = $projectUri,
+                         'blob/master',
+                         $normalizedDocs,
+                         ($Ast.Name + '.md') -join '/' -replace '\\', '/'
         }
 
         # Wrap this whole thing in a try/finally so we can dispose of temp files and PowerShell
@@ -85,6 +88,10 @@ function ConvertTo-MarkdownHelp {
 
         Start-Sleep -Milliseconds 50
 
+        if (-not (Test-Path $docsPath)) {
+            $null = New-Item $docsPath -ItemType Directory
+        }
+
         $targetMarkdownPath = '{0}\{1}.md' -f $docsPath, $Ast.Name
         if (-not (Test-Path $targetMarkdownPath)) {
             $null = New-Item $targetMarkdownPath -ItemType File