#60 Add list-contributors and bump-version scripts

Bump-Version.ps1

@@ -0,0 +1,53 @@
+[CmdletBinding()]
+param (
+    [Switch]
+    $BumpMajor,
+
+    [Switch]
+    $BumpMinor,
+
+    [Switch]
+    $BumpPatch
+)
+
+$VersionFile = "$PSScriptRoot/version.txt";
+$currentVersion = Get-Content $VersionFile -ErrorAction Stop
+if ($null -eq $currentVersion)
+{
+    Write-Error "The $VersionFile file is empty"
+    Exit 1
+}
+if ($currentVersion.GetType().BaseType.Name -eq "Array")
+{
+    $currentVersion = $currentVersion[0]
+    Write-Warning "$VersionFile contains more than one line of text. Using the first line."
+}
+if ($currentVersion -notmatch "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$")
+{
+    Write-Error "The contents of $VersionFile (`"$nextVersion`") not recognised as a valid version number."
+    Exit 2
+}
+
+$parts = $currentVersion.Split('.');
+[int]$major = $parts[0]
+[int]$minor = $parts[1]
+[int]$patch = $parts[2]
+
+if ($BumpMajor)
+{
+    $major += 1;
+}
+
+if ($BumpMinor)
+{
+    $minor += 1;
+}
+
+if ($BumpPatch)
+{
+    $patch += 1;
+}
+
+$newVersion = "$major.$minor.$patch";
+
+Set-Content $VersionFile $newVersion -Encoding UTF8 -Force