Add Show Public Methods With Pry as a ruby til

ruby/show-public-methods-with-pry.md

@@ -0,0 +1,17 @@
+# Show Public Methods With Pry
+
+Open up a [`pry`](https://github.com/pry/pry) session and use the `-m` flag
+with the `ls` command to show just the public methods for an object.
+
+```ruby
+> ls -m :hello
+Comparable#methods: <  <=  >  >=  between?
+Symbol#methods:
+  <=>  as_json      empty?    length              slice     to_sym
+  ==   capitalize   encoding  match               succ      upcase
+  ===  casecmp      id2name   next                swapcase
+  =~   downcase     inspect   pretty_print_cycle  to_proc
+  []   duplicable?  intern    size                to_s
+```
+
+[source](https://github.com/pry/pry/wiki/State-navigation#Ls)