Tag releases and have the server checkout the latest release

Closes #36

githook.sh

@@ -3,6 +3,10 @@
 export PATH="/root/.nvm/versions/node/v6.10.1/bin:${PATH}"
 
 git fetch origin
-git checkout --force origin/master
+git fetch --tags
+latesttag=$(git describe --tags `git rev-list --tags --max-count=1`)
+echo Deploying ${latesttag}
+git checkout --force ${latesttag}
+
 yarn redeploy
 ./node_modules/forever/bin/forever restartall

routes/api.js

@@ -9,8 +9,8 @@ router.get('/gitcommit', function (req, res){
   const apikey = req.headers['api-key'];
   if (apikey == configJSON.api_key) {
     newDevice('_vcid', res, req, configJSON.mailgun_api_key, configJSON.authorized_device_secret);
-    exec('git rev-parse HEAD', function(err, stdout) {
-      const commitId = stdout.substring(0,7);
+    exec('git tag -l --points-at HEAD', function(err, stdout) {
+      const commitId = stdout;
       res.status(200).send({
         commit_id: commitId,
         updated_at: configJSON.last_start_time

routes/endpoints.js

@@ -12,7 +12,7 @@ router.post('/githook', function (req, res) {
   hmac.update(JSON.stringify(req.body));
   computedHubSig = hmac.digest('hex');
   if (xHubSig == computedHubSig) {
-    if (req.body.ref == "refs/heads/master") {
+    if (req.body.ref.startsWith("refs/tags/")) {
       function puts(error, stdout, stderr) { sys.puts(stdout) }
       exec("./githook.sh", puts);
       res.send({

src/common/components/Footer/Footer.jsx

@@ -74,7 +74,7 @@ export default class Footer extends React.Component {
     let formattedDate = '';
 
     if (commit_id != '') {
-      commitURL = "https://github.com/virajchitnis/virajchitnis.com/commit/" + commit_id;
+      commitURL = "https://github.com/virajchitnis/virajchitnis.com/tree/" + commit_id;
       formattedDate = new Date(updated_at).toLocaleTimeString("en-us", options);
       commitFooter = (
         <p className="commit">