Created readme.

jb-lopez · jb-lopez · commit eb349404031f · 2016-08-08T07:10:58.000-06:00
diff --git a/README.md b/README.md
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+# PHP Trader Interface
+
+This is an interface to the PHP Trader API.
+
+### Requires PHP 7.0.0 or greater
+
+Type casting is used at every possible opportunity.
