Wrapped it in a VS project and added a check for PSISE

PoShGist.psm1

@@ -4,16 +4,20 @@
 . (Join-Path $PSScriptRoot Send-Gist.ps1)
 . (Join-Path $PSScriptRoot Test-Gist.ps1)
 
-function Add-MenuItem {
-    param([string]$DisplayName, $SB, $ShortCut)
+if ($PSISE) {
 
-    $menu=$psISE.CurrentPowerShellTab.AddOnsMenu.Submenus | Where {$_.DisplayName -Match $DisplayName}
+    function Add-MenuItem {
+        param([string]$DisplayName, $SB, $ShortCut)
 
-    if($menu) {
-        [void]$psISE.CurrentPowerShellTab.AddOnsMenu.Submenus.Remove($menu)
+        $menu=$psISE.CurrentPowerShellTab.AddOnsMenu.Submenus | Where {$_.DisplayName -Match $DisplayName}
+
+        if($menu) {
+            [void]$psISE.CurrentPowerShellTab.AddOnsMenu.Submenus.Remove($menu)
+        }
+
+        [void]$psISE.CurrentPowerShellTab.AddOnsMenu.Submenus.Add($DisplayName, $SB, $ShortCut)
     }
 
-    [void]$psISE.CurrentPowerShellTab.AddOnsMenu.Submenus.Add($DisplayName, $SB, $ShortCut)
-}
+    Add-MenuItem '_Send Gist' { Send-Gist } 'CTRL+Shift+S'
 
-Add-MenuItem '_Send Gist' { Send-Gist } 'CTRL+Shift+S'
+}

Posh-Gist.psd1

@@ -0,0 +1,36 @@
+# Module manifest for module Posh-Gist
+# Generated by: Josh Einstein
+# Generated on: 2016-02-12
+
+@{
+
+    Description = "Fork of Doug Finke's Posh-Gist module."
+    ModuleVersion = '1.0'
+    GUID = 'bd4390dc-a8ad-4bce-8d69-f53ccf8e4163'
+    Author = 'Doug Finke'
+    CompanyName = ''
+    Copyright = ''
+
+
+    RequiredModules = @()
+    RequiredAssemblies = @()
+
+    RootModule = 'PoshGist.psm1'
+    ScriptsToProcess = @()
+    TypesToProcess = @()
+    FormatsToProcess = @()
+    NestedModules = @()
+
+    FunctionsToExport = @(
+        'Get-Gist'
+        'Get-GistAuthHeader'
+        'Get-GistContent'
+        'Remove-Gist'
+        'Send-Gist'
+        'Test-Gist'
+    )
+    #CmdletsToExport = '*'
+    #VariablesToExport = '*'
+    #AliasesToExport = '*'
+
+}

Posh-Gist.pssproj

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>6CAFC0C6-A428-4d30-A9F9-700E829FEA51</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>MyApplication</RootNamespace>
+    <AssemblyName>MyApplication</AssemblyName>
+    <Name>Posh-Gist</Name>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Folder Include="Tests\" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Get-Gist.ps1" />
+    <Compile Include="Get-GistAuthHeader.ps1" />
+    <Compile Include="Get-GistContent.ps1" />
+    <Compile Include="Posh-Gist.psd1" />
+    <Compile Include="Tests\Posh-Gist.tests.ps1" />
+    <Compile Include="PoShGist.psm1" />
+    <Compile Include="Remove-Gist.ps1" />
+    <Compile Include="Send-Gist.ps1" />
+    <Compile Include="Test-Gist.ps1" />
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <Target Name="Build" />
+</Project>

Posh-Gist.sln

@@ -0,0 +1,28 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.24720.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{F5034706-568F-408A-B7B3-4D38C6DB8A32}") = "Posh-Gist", "Posh-Gist.pssproj", "{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{E7DEA85B-7CE0-4DE1-93E9-18B2F36B8C85}"
+	ProjectSection(SolutionItems) = preProject
+		README.md = README.md
+		UsingPoshGist.gif = UsingPoshGist.gif
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

Tests/Posh-Gist.tests.ps1

@@ -0,0 +1,17 @@
+#
+# This is a PowerShell Unit Test file.
+# You need a unit test framework such as Pester to run PowerShell Unit tests. 
+# You can download Pester from http://go.microsoft.com/fwlink/?LinkID=534084
+#
+
+Describe "Get-Gist" {
+
+    Context "Function Exists" {
+
+        It "Should Return" {
+
+        }
+
+    }
+
+}