io day 1 start

io/README.md

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+# Io
+
+## Day 1
+
+Getting set up
+
+```
+brew install io
+```
+
+And we're in business!

io/fizzbuzz.io

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+# Officially an Io programmer
+for(n, 1, 100,
+  if(n % 15 == 0) then("fizzbuzz" println) \
+  elseif(n % 3 == 0) then("fizz" println) \
+  elseif(n % 5 == 0) then("buzz" println) \
+  else(n println)
+)