add readme for sysadminer with some early goals recoreded

sysadminer/README.md

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+# Sysadminer
+Some functionality goals:
+- zip up a file
+- tar up and extract a tarball
+- create an ssh keypair
+- backup a directory / file to another location
+- list installed software packages on a running system 
+- print network information
+- print disk usage information
+- print operating system information