DOCS-883 add db.serverBuildInfo()

Author: Bob Grabar

source/reference/javascript.txt

@@ -194,6 +194,9 @@ Database Methods
 .. include:: method/db.runCommand.txt
    :start-after: mongodb
 
+.. include:: method/db.serverBuildInfo.txt
+   :start-after: mongodb
+
 .. include:: method/db.serverStatus.txt
    :start-after: mongodb
 

source/reference/method/db.serverBuildInfo.txt

@@ -0,0 +1,11 @@
+====================
+db.serverBuildInfo()
+====================
+
+.. default-domain:: mongodb
+
+.. method:: db.serverBuildInfo()
+
+   Provides a wrapper around the :dbcommand:`buildInfo` :term:`database
+   command`. The :dbcommand:`buildInfo` database command returns a build
+   summary for the current :program:`mongod`.