refs #28 - usage of executable shouldn't be mandatory; so welcome to the phantom.casperPath variable

@@ -2,4 +2,4 @@
 
 CASPERJS_HOME="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && cd .. && pwd )"
 
-phantomjs $CASPERJS_HOME/casper.js $CASPERJS_HOME $*
+phantomjs $CASPERJS_HOME/casper.js --casper-dir=$CASPERJS_HOME $*

@@ -32,20 +32,18 @@
         return Array.prototype.join.call(arguments, this.separator);
     };
 
-    if (!fs.isDirectory(phantom.args[0]) || !fs.isFile(fs.pathJoin(phantom.args[0], 'casper.js'))) {
-        console.log('First argument must be the absolute path to casper root path.');
-        phantom.exit(1);
-    }
+    // seeking for casperPath passed as an argument
+    phantom.args.forEach(function(arg) {
+        var pathMatch = arg.match(/--casper-dir=(.+)/);
+        if (pathMatch) {
+            phantom.casperPath = pathMatch[1];
+        }
+    });
 
-    if (!fs.isFile(phantom.args[1])) {
-        console.log('Usage: $ casperjs script.[js|coffee]');
-        phantom.exit(1);
+    if (!phantom.casperPath || !fs.isDirectory(phantom.casperPath)) {
+        console.log('Cannot find CasperJS home path. Did you set phantom.casperPath or pass the --casper-dir option?');
     }
 
-    phantom.casperPath = phantom.args[0];
-    phantom.casperScript = phantom.args[1];
-    phantom.casperLibPath = fs.pathJoin(phantom.casperPath, 'lib');
-
     [
         'casper.js',
         'clientutils.js',
@@ -55,7 +53,7 @@
         'utils.js',
         'xunit.js'
     ].forEach(function(lib) {
-        phantom.injectJs(fs.pathJoin(phantom.casperLibPath, lib));
+        phantom.injectJs(fs.pathJoin(phantom.casperPath, 'lib', lib));
     });
 
     phantom.injectJs(phantom.args[1]);

 var fs = require('fs');
 
-phantom.injectJs(fs.pathJoin(phantom.casperLibPath, 'vendors', 'esprima.js'));
+phantom.injectJs(fs.pathJoin(phantom.casperPath, 'lib', 'vendors', 'esprima.js'));
 
 var casper = new phantom.Casper({
     faultTolerant: false,
@@ -11,7 +11,7 @@ var tests = [];
 if (phantom.args.length > 2 && fs.isFile(phantom.args[2])) {
     tests = [phantom.args[2]];
 } else {
-    tests = [fs.absolute(fs.pathJoin(phantom.casperLibPath, '..', 'tests', 'suites'))];
+    tests = [fs.absolute(fs.pathJoin(phantom.casperPath, 'tests', 'suites'))];
 }
 
 // Overriding Casper.open to prefix all test urls