Update README.md

added info on new optimized goroutine version of hashgen

Author: cyclone-github

README.md

@@ -1,15 +1,18 @@
 # hashgen
 Hashgen is a simple CLI hash generator written in go and cross compiled for Linux, Windows & Mac.
 
-Set your mode and wordlist with a simple command line, press enter and hashgen writes hashes to stdout.
+Set your mode, wordlist input & hash output files with a simple command line, press enter.
+
+hashgen_old.go is the original, non-optimized code which writes to stdout.
+
+hashgen.go (versions with 'goroutin') has been optimized with goroutins, read/write buffers for faster performance and writes to an output file with flag '-o' rather than stdout. 
 
 In addition to multiple hashing functions, hashgen can also encode / decode base64.
 
 Example Usage:
 - ./hashgen -help
 - ./hashgen -version
-- ./hashgen -m md5 -w wordlist.txt
-- ./hashgen -m md5 -w wordlist.txt > output.txt
+- ./hashgen -m md5 -w wordlist.txt -o output.txt
 
 Currently Supported functions:
 - base64decode
@@ -34,7 +37,14 @@ https://github.com/cyclone-github/hashgen/tree/main/benchmarks
 - If you want the latest hashgen features, compiling from source is the best option since the release version may run several revisions behind the source code.
 - Download and install go https://go.dev/doc/install
 - Download hashgen.go and open a terminal / command prompt in that directory
-- Type "go run hashgen.go -version". You should see the current version of hashgen print out (Cyclone hash generator v2022-12-xx.xxxx).
+- Type "go run hashgen.go -version". You should see the current version of hashgen print out (Cyclone hash generator v2022-xx-xx.xxxx).
 - Now type "go build hashgen.go" to compile hashgen.go.
 - You will notice your binary is much larger than the ones I've uploaded. This is due to the flags used during compiling and my binaries are compressed with upx.
 - Some antivirus software on Windows may block hashgen-x64.exe from running. If this happens, you can add an exception to your antivirus software.
+
+### version history
+- v2022-12-15.2030; initial release
+- v2022-12-16.1800; fixed ntlm hash function, tweaked -w flag to be less restrictive, clean up code
+- v2022-12-17.2100; fixed typo in wordlist tag, added '-m plaintext' output mode (prints -w wordlist file to stdout)
+- v2022-12-20.1200; cleaned up bcrypt code
+- v2022-12-20.1430-goroutine; complete rewrite using goroutines & read/write buffers