Special case production environment on cache calculation

This is because of a difference in directory nesting level between development and production.

Blockdown.coffee

@@ -390,8 +390,13 @@ class Blockdown
 				#
 				if @useContentCache
 					parsedFilePath = (path.parse file)
-					console.log(parsedFilePath)
-					filePathKey = path.join parsedFilePath.dir.split('/')[5..].join('/'), parsedFilePath.base
+					# console.log(parsedFilePath)
+
+					indexToStartFrom = if app.isRunningInProduction then 4 else 5
+
+					filePathKey = path.join parsedFilePath.dir.split('/')[indexToStartFrom..].join('/'), parsedFilePath.base
+
+					console.log(filePathKey)
 
 					# @log.info "File path key: #{filePathKey}"
 					# @log.info "Current: #{@contentCurrentModifiedTimes[filePathKey]}"