adding initial README file

README

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+With the good work by "Let’s Encrypt" in providing free SSL certs for users, I wanted a quick way to check all the domains I look aftet
+to determine which ones have correct SSL certs, and which ones are in need of updating etc. 
+
+This bash file is the first draft a a programto do that.   It can either be run against a list of file names, or on a single server with 
+the aim of getting all the domain names from the server.   The output looks like;
+
+Domain                     cert issued for            valid until               cert issued by                possible issues?
+domain1.com                domain1.com                Dec 22 09:19:00 2016 GMT  Let's Encrypt Authority X1  - certificate near renewal date
+domain2.com                domain2.com (alt)          Dec 22 11:42:00 2016 GMT  Let's Encrypt Authority X1  - certificate near renewal date
+domain3.net                domain3.net                Mar  4 10:10:00 2016 GMT  Let's Encrypt Authority X1
+