I have shared a script to enable replication database http://beyondrelational.com/justlearned/posts/724/enabling-the-replication-database-in-sql-server.aspx, here you can find a script to create publication after enabling the replication database. You can change the parameter values accordingly as this is for default values.

<pre class="brush: plain">
USE [PublisherDB]
GO

-- Adding publication

exec sp_addpublication 
    @publication = N'PublicationName',
    @description = N'Transactional publication of database ''PublisherDB'' from Publisher ''PublisherServer''.', 
    @sync_method = N'concurrent', 
    @retention = 0, 
    @allow_push = N'true', 
    @allow_pull = N'true', 
    @allow_anonymous = N'true', 
    @enabled_for_internet = N'false', 
    @snapshot_in_defaultfolder = N'false', 
    @alt_snapshot_folder = N'Replication shared Folder', 
    @compress_snapshot = N'false', 
    @ftp_port = 21, 
    @ftp_login = N'anonymous', 
    @allow_subscription_copy = N'false', 
    @add_to_active_directory = N'false', 
    @repl_freq = N'continuous', 
    @status = N'active', 
    @independent_agent = N'true', 
    @immediate_sync = N'true', 
    @allow_sync_tran = N'false', 
    @autogen_sync_procs = N'false', 
    @allow_queued_tran = N'false', 
    @allow_dts = N'false', 
    @replicate_ddl = 1, 
    @allow_initialize_from_backup = N'false', 
    @enabled_for_p2p = N'false', 
    @enabled_for_het_sub = N'false'
GO

-- Adding publication snapshot

exec sp_addpublication_snapshot 
    @publication = N'PublicationName', 
    @frequency_type = 1, 
    @frequency_interval = 0, 
    @frequency_relative_interval = 0, 
    @frequency_recurrence_factor = 0, 
    @frequency_subday = 0, 
    @frequency_subday_interval = 0, 
    @active_start_time_of_day = 0, 
    @active_end_time_of_day = 235959, 
    @active_start_date = 0, 
    @active_end_date = 0, 
    @job_login = N'Domain\WindowsUser', 
    @job_password = null, 
    @publisher_security_mode = 1
GO

-- Granting permission to users

 exec sp_grant_publication_access 
        @publication = N'PublicationName', @login = N'sa'
    GO

    exec sp_grant_publication_access 
        @publication = N'PublicationName', 
        @login = N'NT AUTHORITY\SYSTEM'
    GO

    exec sp_grant_publication_access 
        @publication = N'PublicationName', 
        @login = N'BUILTIN\Administrators'
    GO
    </pre>