Fix path to template when used as gem

Author: shreyasbharath

README.md

@@ -21,7 +21,7 @@ This tool is inspired by a number of projects [rubrowser](http://www.emadelsaid.
 
 The pretty `d3` visualisations are directly copied from `objc-dependency-visualiser`.
 
-A huge shout out to the poeple behind these projects.
+A huge shout out to the people behind these projects.
 
 ## Usage
 

lib/cpp_dependency_graph/graph_visualiser.rb

@@ -39,7 +39,8 @@ def generate_html_file(deps, file)
     json_connections = JSON.pretty_generate(connections)
     # File.write(file, json_nodes + json_connections)
 
-    template = File.read('views/index.html.template')
+    template_file = resolve_file_path('views/index.html.template')
+    template = File.read(template_file)
     contents = template % { dependency_links: json_connections }
     File.write(file, contents)
   end
@@ -51,4 +52,8 @@ def create_node(name)
     node.attributes[:shape] = 'box3d'
     node
   end
+
+  def resolve_file_path(path)
+    File.expand_path("../../../#{path}", __FILE__)
+  end
 end