Create cli.ps1 (#151)

Translates cli.sh for use in Windows.

*nix:
./cli.sh transform --help

Windows:
.\cli.ps1 transform --help

Author: sivan-koren

Diff for: cli.ps1

@@ -0,0 +1,14 @@
+##Built in PowerShell v5.1, but should work in any version.
+$CUR_DIR = Get-Location | Select-Object -ExpandProperty Path
+$SCRIPT_DIR = $PSScriptRoot
+$date = [DateTimeOffset]::Now.ToUnixTimeSeconds()
+Set-Location $SCRIPT_DIR
+go build -o $CUR_DIR\op.exe -ldflags "-X main.gitCommit=$(git rev-parse HEAD) -X main.buildEpochSec=$date" "$SCRIPT_DIR\\cli\\op.go"
+if ($?) {
+    Set-Location $CUR_DIR
+    $opargs = './op.exe ' + $args -join " "
+    Invoke-Expression $opargs
+} else {
+    Write-Host "Failed to build op.exe. cli.ps1 may not be working correctly."
+    Exit
+}