CM has "advanced reboot" built in, enable this feature in Developer Options, hold POWER key, choose Reboot and you'll see the option to reboot into recovery.
If you're not using a touch recovery, you might still have to flash one, in case some actions require both volume keys.
Sent from Google Nexus 4 @ CM11
Google Nexus 4 (CM11 Nightly)
Google Nexus 7 (2013, WiFi) (CM11 Nightly)
Motorola Droid RAZR M (CM11 Nightly)
Motorola Photon Q 4G LTE (CM11 Nightly
Samsung Galaxy Nexus (CM11 Nightly
HTC Incredible S (CM11 Unofficial
Nokia E7-00 (Symbian Anna 025.007 Cracked)