init (sesshist) session on recall when it doesn't exist, minor changes to readme

README.md

@@ -67,7 +67,9 @@ Imagine being able to search your shell history based on both the command itself
 
 - :heavy_check_mark: Be compatible with Linux and macOS  
 
-- :heavy_check_mark: Require very little prerequisite software
+- :white_check_mark: Require very little prerequisite software
+  - :heavy_check_mark: Linux
+  - :x: MacOS
 
 - :white_check_mark: Show cool graphs based on recorded history
 
@@ -92,6 +94,8 @@ Standard stuff: `bash`, `curl`, `tar`, ...
 
 Additional prerequisities: `bash-completion` (if you use bash)
 
+MacOS: `coreutils`
+
 ## Installation
 
 ### Simplest

pkg/sesshist/sesshist.go

@@ -151,8 +151,9 @@ func (s *Dispatch) Recall(sessionID string, histno int, prefix string) (string,
 	s.mutex.RUnlock()
 
 	if found == false {
-		// go s.initSession(sessionID)
-		return "", errors.New("sesshist ERROR: No session history for SessionID " + sessionID + " - should we create one?")
+		// TODO: propagate actual shell here so we can use it
+		go s.initSession(sessionID, "bash")
+		return "", errors.New("sesshist ERROR: No session history for SessionID " + sessionID + " - creating one ...")
 	}
 	log.Println("sesshist - recall: Locking session lock ...")
 	session.mutex.Lock()