We have deployed webpart using powershell but cannot find it under the Edit page-> add webpart -> custom, there is no folder called 'custom'. This folder otherwise comes up when deployed via VS.
$solution="mywebpart.wsp"
$path= $solutionPath + $solution
Add-SPSolution -LiteralPath $path
install-spsolution -Identity $solution -WebApplication $oURL -GACDeployment
WaitForJobToFinish
We checked under central admin -> system settings -> manage farm solution, it shows that it is deployed to the correct URL.