let's accept both JSON and urlencoded hooks

See #88, release log:

• 7987be0 by @yegor256: #88 rename
• ffff090 by @yegor256: #88 png binary
• 82a2a48 by @yegor256: #88 space removed
• 03c729e by @yegor256: #88 2.4.6
• 62a48ac by @yegor256: #88 back to ubuntu 14
• 8c076a5 by @yegor256: #88 2.13
• 1773944 by @yegor256: #88 dpkg removed
• cd8c8fd by @yegor256: #88 new deb file
• c981f5a by @yegor256: #88 sudo removed
• 2430e97 by @yegor256: #88 sudo dpkg --add-architectu...
• aa62a7e by @yegor256: #88 multiarch-support
• 2f62da4 by @yegor256: #88 libc6:i386
• 4ecb8c5 by @yegor256: #88 show file details for git
• dfa6bb7 by @yegor256: #88 amd64
• 06a0c38 by @yegor256: #88 git whoami
• c55986e by @yegor256: #88 git --version
• aef8714 by @yegor256: #88 ls -al
• 49d70f0 by @yegor256: #88 find first
• 3e46d91 by @yegor256: #88 find/ls
• b26c007 by @yegor256: #88 amd64
• and 11 more...

Released by Rultor 1.66.2, see build log