Remove the log file before initiating the fifo

The slug compilation could have created some of the log files already, for
instance in the case of the Symfony2 cache warmup.
Merge branch 'master' of https://github.com/aarondfrancis/heroku-buildpack-php-nginx-yii into feature/yii-framework-support
(cherry-picked and thus squashed commit)

commit 873c8a3a69a2bbab273dbb146ff582a2d6598dd6
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 14:39:38 2014 -0500

    test

commit f9d3658071caf3ad9a9f4bfbbeea686b39613ba5
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 14:33:15 2014 -0500

    test

commit f1735ae8c683756889f5fe008bb60ba206eb6177
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 14:26:52 2014 -0500

    test

commit 5c89531a6025b6029bddfc0dc22885ada2df1c3c
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 14:24:07 2014 -0500

    test

commit 4d6258fde82729104ab24675d3d3b92b89e7feed
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 14:21:31 2014 -0500

    tes

commit 80de54f3f24fd1e3566fa748077fa2f3f4cc9b84
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 14:15:44 2014 -0500

    test

commit 5eb74b72d6172c661b957dab8e589061600ffe96
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 13:31:24 2014 -0500

    test

commit 3fef983dd353598feb5a71648e71aae50ed1cfe1
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 13:28:55 2014 -0500

    test

commit 1a0cf3ea2fc49b4fa4fecc0a11d5cafbd6e4fc16
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 12:37:47 2014 -0500

    yii

commit ebfcd97f0803959ed94ec10d6b77aab434b1e0bd
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 12:22:03 2014 -0500

    fixed

commit 379109cfa28ca186627b865c14f01ddbbbf41d40
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 12:17:49 2014 -0500

    test

commit 215da8802856294ea62cc5fff3875aaaf740558a
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 12:11:25 2014 -0500

    test

commit 44172741458e058895aea6426a466ae3a2bf10af
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 12:09:51 2014 -0500

    test

commit 3e6cc4cd2e8d21390aa5aa4e37b1f05452a7460e
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 12:03:29 2014 -0500

    test

commit b341b99d86e3b48cd00554f9a9d67686dba2c6f9
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 11:49:39 2014 -0500

    test

commit 0399579d1ed52c0b2ca1461cd332e87ef31251a5
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 11:43:47 2014 -0500

    test

commit 96d6fc1b49f0238c68c99daf897fa9685ea06d9c
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 11:11:01 2014 -0500

    test

commit a8159b2e6092139910b30dba254dfb27a7335c1a
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 11:01:39 2014 -0500

    test

commit 285b759e3071076bb5142fef8a9eacb2bf64cd32
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 10:45:51 2014 -0500

    writeable

commit 03ef13a960d641371e9e20ee5e8cffdaaa49b6de
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 10:41:59 2014 -0500

    test

commit 09f2448b98cfe83e912ae7392a7346c48821fc3a
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 10:38:02 2014 -0500

    test

commit f405abe5549a39bb1d50790861c84f4d9535c541
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 10:34:03 2014 -0500

    lock -> json

commit ff2206e0a21fe087e3e2d2f22aedfe921624ca16
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 10:33:27 2014 -0500

    executable

commit a56fea0b587b73ff83352ec88208b815fc07967e
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 10:29:23 2014 -0500

    Allow no lock file

commit 611bf90fdda386cb7bc2c7c6a0af877f08591514
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 09:33:41 2014 -0500

    Yii

commit 68c3e95d2fc7ab91417073f43d0999b619e8cad2
Author: Aaron Francis <aarondfrancis@gmail.com>
Date:   Fri Mar 28 09:29:53 2014 -0500

    Yii
Revert "lock -> json"

This reverts commit f405abe5549a39bb1d50790861c84f4d9535c541.
Revert "Allow no lock file"

This reverts commit a56fea0b587b73ff83352ec88208b815fc07967e.
A more robust Yii nginx-configuration
Corrected yii framework detection
Added Yii support to readme
Processing all .php requests with fastcgi
Merge pull request #120 from neam/feature/yii-framework-support

Yii framework support
Merge pull request #114 from stof/fix_log_files

Remove the log file before initiating the fifo