Creation date from 1st merge request

Configuration option (config.toml):

[git]
mergeMessage = "array or string"

sitegin/config.js

@@ -51,7 +51,6 @@ module.exports = function() {
         return resolve({config: config});
       }
       data = toml.parse(data);
-      console.log('data: '+data);
       for(let attr in config) { data[attr] = config[attr]; }
       resolve({config: data});
     })

sitegin/gitInfo.js

@@ -58,7 +58,7 @@ var gitlog = function(repo) {
             'email': author.email()
           },
           'date': commit.date(),
-          'message': commit.message().trim()
+          'message': commit.message()
         };
       };
     });
@@ -82,7 +82,10 @@ var gitlog = function(repo) {
   });
 };
 
-var getFilesHistory = function(repo) {
+var getFilesHistory = function(repo, startCommitMessage) {
+  if(!Array.isArray(startCommitMessage) && startCommitMessage !== undefined) {
+    startCommitMessage = [startCommitMessage];
+  }
   return Promise.resolve()
   .then(function() {
     return gitlog(repo)
@@ -109,6 +112,31 @@ var getFilesHistory = function(repo) {
       });
     });
     return filehistory;
+  })
+  .then(function(log) {
+    if(startCommitMessage === undefined) return log;
+    var newLog = {};
+    function filterCommits(commits) {
+      var r = [];
+      commits.reverse();
+      var matched = false;
+      commits.forEach(function(commit) {
+        if(!matched)
+        startCommitMessage.forEach(function(matcher) {
+          if(commit.message.indexOf(matcher) > -1) matched = true;
+        })
+        if(matched) {
+          r.push(commit);
+        }
+      })
+      r.reverse();
+      if(r.length < 1) return undefined;
+      return r;
+    }
+    for(var file in log) {
+      newLog[file] = filterCommits(log[file]);
+    }
+    return newLog;
   });
 }
 
@@ -120,7 +148,9 @@ module.exports = function(obj) {
     .catch(function() {
       resolve(obj);
     })
-    .then(getFilesHistory)
+    .then(function(repo) {
+      return getFilesHistory(repo, obj.config.git.mergeMessage);
+    })
     .then((filesHistory) => {
       obj.pages.forEach(function(article) {
         var file = path.relative(pathToRepo, article.filename);
@@ -149,6 +179,8 @@ module.exports = function(obj) {
             article.metadata.author.email = oldestCommit.author.email
 
           article.commits = commits;
+        } else {
+          console.log('[Warning] Article '+ file +' is not in git repository or doesn\'t have merge commit');
         }
       });
       return obj;