fixes #232 - symlink resolution in ruby version

@@ -12,6 +12,7 @@ XXXX-XX-XX, v1.0.0
 - fixed [#236](https://github.com/n1k0/casperjs/issues/236) - Casper.exit return `this` after calling `phantom.exit()` that may caused PhantomJS to hang
 - fixed [#231](https://github.com/n1k0/casperjs/pull/231) - added `--pre` and `--post` options to the `casperjs test` command to load test files before and after the execution of testsuite 
 - fixed [#222](https://github.com/n1k0/casperjs/pull/222) & [#211](https://github.com/n1k0/casperjs/issues/211) - Change mouse event to include an X + Y value for click position
+- fixed [#232](https://github.com/n1k0/casperjs/issues/232) - symlink resolution in the ruby version of the `casperjs` executable
 - added [`ClientUtils.getDocumentHeight()`](http://casperjs.org/api.html#clientutils.getDocumentHeight)
 - added a `--no-colors` option to the `casper test` command to skip output coloration
 

@@ -2,8 +2,14 @@
 # Ruby Wrapper for CasperJs
 # by hannyu
 
+def resolve(file_path)
+    while File.symlink?(file_path) do
+        file_path = File.dirname(file_path) + '/' + File.readlink(file_path)
+    end
+    file_path
+end
 
-CASPER_PATH = File.dirname(File.dirname(File.expand_path(__FILE__)))
+CASPER_PATH = File.dirname(File.dirname(File.expand_path(resolve(__FILE__))))
 
 PHANTOMJS_NATIVE_ARGS = [
     '--cookies-file',
@@ -33,7 +39,7 @@ ARGV.each do |arg|
     is_found = false
     PHANTOMJS_NATIVE_ARGS.each do |pna|
         if arg.start_with? pna
-            PHANTOMJS_ARGS << arg 
+            PHANTOMJS_ARGS << arg
             is_found = true
             break
         end
@@ -54,4 +60,3 @@ if system(CASPER_COMMAND.join(" ")).nil?
 end
 
 exit $?.exitstatus
-