fix: Prevent error 'logo file not found'

By requiring a file to render the Logo, BoJack needed a file to
initialize, adding a dependency.

Closes #47

src/bojack/logo.cr

@@ -0,0 +1,21 @@
+require "./version"
+
+module BoJack
+  class Logo
+    def self.render
+      logo = <<-'HERE'
+             _|\ _/|_,
+           ,((\\``-\\\\_
+         ,(())      `))\
+       ,(()))       ,_ \
+      ((())'   |        \
+      )))))     >.__     \
+      ((('     /    `-. .c|
+              /        `-`'
+      BoJack VERSION
+      HERE
+     
+     puts logo.gsub("VERSION", BoJack::VERSION)
+    end
+  end
+end

src/bojack/server.cr

@@ -3,7 +3,7 @@ require "logger"
 require "./logger"
 require "./memory"
 require "./command"
-require "./version"
+require "./logo"
 
 module BoJack
   class Server
@@ -19,7 +19,7 @@ module BoJack
       server.recv_buffer_size = 4096
       memory = BoJack::Memory(String, Array(String)).new
 
-      puts BoJack::Logo.build
+      BoJack::Logo.render
 
       @logger.info("Server started at #{@hostname}:#{@port}")
 
@@ -76,12 +76,4 @@ module BoJack
     end
   end
 
-  class Logo
-    def self.build
-      logo = String.build do |logo|
-        logo << File.read(File.join(File.dirname(__FILE__), "logo"))
-        logo << "BoJack #{BoJack::VERSION}"
-      end
-    end
-  end
 end