Merge pull request #112 from cms-sw/smuzaffar-patch-1

bot command updates for issues: assigning based on package name

cms-bot-cmssw-issues.md

@@ -2,7 +2,9 @@ For CMSSW **Issues**, following commands in first line of a comment are recogniz
 - **```+1|approve[d]|sign[ed]|+category```**: L1/L2's to approve it
 - **```-1|reject[ed]|-category```**: L1/L2's to reject it
 - **```assign <category>[,<category>[,...]]```**: Any L1/L2's to request signatures from other categories
+- **```assign (from|package) <package_name>[,<package_name>[,...]]```**: Any L1/L2's to request signatures from categories responsible for package_names
 - **```unassign <category>[,<category>[,...]]```**: Any L1/L2's to remove signatures from other categories
+- **```unassign (from|package) <package_name>[,<package_name>[,...]]```**: Any L1/L2's to remove signatures from other categories responsible for package_names
 - **```hold```**: L1/all L2's/release manager to mark it as on hold
 - **```unhold```**: L1/user who put this PR on hold
 - **```type gh-label-name(,gh-label-name,...)```**: L1/L2/requestor to add an extra label for this github issue