Fix email regexp.

README.rst

@@ -14,6 +14,7 @@ Dependencies:
 - pip & setuptools must be installed, please see http://pip.readthedocs.org/en/latest/installing.html
 - PyQt must be installed, to install on Debian-like Linux: sudo apt-get install python3-pyqt4
 - ws4py, to install: sudo apt-get install python3-ws4py or pip3 install ws4py
+- Dynamips version 0.2.11 or above (http://github.com/GNS3/dynamips)
 
 $ python3 setup.py install
 $ gns3

gns3/early_release_dialog.py

@@ -32,7 +32,7 @@ class EarlyReleaseDialog(QtGui.QDialog, Ui_EarlyReleaseDialog):
 
     def isEmail(self, email):
 
-        if re.match("[\.\w]{1,}[@]\w+[.]\w+", email):
+        if re.match("([\w\-\.]+@(\w[\w\-]+\.)+[\w\-]+)", email):
             return True
         else:
             return False