More specific error message for MS AD

#35: Check error message for Microsoft AD codes and give more specific flash message if identified.

Support for fetching groups

#10: Add support for fetching groups. While this is really coming from ldapauth-fork, updated the minor version of this library as well to draw attention to new features.

Pass `req` to options function

#24: Pass req object to the function returning options

Handle `constraintViolationError`

#21: Handle constraintViolationError as a login failure instead of an error.

Inherit from passport-strategy

v0.2.4

0.2.4: Inherit from passport-strategy

Use same option keys as ldapjs

Use bindDn and bindCredentials also in documentation.

Configurable flash messages

• Added options for configurable flash messages from authenticate
• Return HTTP 400 when username or password is missing

Add passport as peerDependency

Prevent version mismatch by defining passport as peerDependency

Passport update, pass a function instead of options

• #8: A callback function providing options can be passed instead of options hash
• Update passport dependency to 0.2.0

Handle NoSuchObjectError as authentcation failure

#6: Handle NoSuchObjectError as authentication failure instead of an error