add basic publish script

bin/Publish.ps1

@@ -0,0 +1,46 @@
+<#
+    .DESCRIPTION
+    Publishes to 'master' after deleting dev files.
+#>
+
+param([string]$Tag)
+
+function AbortIfProcessFailed {
+    param([string]$message)
+    if ($LASTEXITCODE) { throw $message }
+    exit $LASTEXITCODE
+}
+
+function AbortIfDirtyWorkingDirectory {
+    if (@(git status --short).Count -ne 0) {
+        throw "uncommited changes "
+        exit 1
+    }
+}
+
+function AbortIfGitNotAvailable {
+    get-command git -erroraction stop > $null
+}
+
+$toDelete = @(
+    "manifest.json",
+    "tests",
+    "bin"
+)
+
+AbortIfGitNotAvailable
+AbortIfDirtyWorkingDirectory
+
+try {
+    push-location $PSScriptRoot\..
+
+    remove-item -recurse $toDelete
+
+    write-warning "commit the files, tag and push upstream"
+    git checkout master
+    AbortIfProcessFailed "could not checkout branch master"
+}
+finally {
+    pop-location
+}
+