Add pbkdf2-ruby to Travis CI custom Gemfile. Update README and CLI fo…

…r new syntax.

README.md

@@ -54,8 +54,8 @@ Or install it yourself as:
     # create a random secret (returns the secret)
     c1.secret = SecretSharing::Shamir::Secret.new
 
-    # (or create a fixed secret of your choice by passing in an OpenSSL::BN object)
-    c1.secret = SecretSharing::Shamir::Secret.new(OpenSSL::BN.new('123456789'))
+    # (or create a fixed secret of your choice by passing in an OpenSSL::BN object in the :secret arg)
+    c1.secret = SecretSharing::Shamir::Secret.new(:secret => OpenSSL::BN.new('123456789'))
 
     # show secret
     puts c1.secret

bin/secretsharing

@@ -52,7 +52,7 @@ if choices[:action] == :encode
   @c = SecretSharing::Shamir::Container.new(choices[:secret_n], choices[:secret_k])
 
   if choices[:secret_type] == :fixed
-    @c.secret = SecretSharing::Shamir::Secret.new(OpenSSL::BN.new(choices[:secret_password].to_s))
+    @c.secret = SecretSharing::Shamir::Secret.new(:secret => OpenSSL::BN.new(choices[:secret_password].to_s))
   else
     @c.secret = SecretSharing::Shamir::Secret.new
   end

gemfiles/Gemfile.ci

@@ -2,3 +2,5 @@ source "https://rubygems.org"
 
 gem 'rake'
 gem 'minitest'
+gem 'highline'
+gem 'pbkdf2-ruby'