Add Readme

README.md

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+# tlscat
+A simple tls tool. Simple and small queries that would require long openssl commands.
+```
+$ tlscat -h
+Usage: tlscat [-Chv] [-c value] [-k value] [-n value] [-p value] [-s value] [parameters ...]
+ -c, --crt=value   crt file
+ -C, --key-check   private key validation
+ -h, --help        display this help
+ -k, --key-file=value
+                   key file
+ -n, --server-name=value
+                   optional server name
+ -p, --port=value  optional port, default:443
+ -s, --server=value
+                   remote server
+ -v, --verbose     verbose output
+
+```