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What's new in 2.7.0.0:

Faster graphics rendering by disabling alpha blending on fully opaque objects thanks to Tassadar
Allow sideloading from /tmp on encrypted devices
Check for a crypto footer before asking for a password to prevent user confusion
Additional checks for validity to auto generated backup names
Text wrap in the console output
Proper caps lock support in the keyboard
Mouse support via USB OTG for devices with a broken digitizer
Improve scanning of storage locations for OpenRecoveryScript
Haptic feedback for buttons, keyboard, and vibration at the end of longer running actions
Fixed ext4 wiping when no selinux contexts are defined for that partition (e.g. sd-ext)
Update SuperSU to 1.93 and improve installation process
Added selinux contexts restoration to fix permissions
Load RTC offset on Qualcomm devices to fix the date/time in recovery
USB Mass Storage fixes Add SELinux support checking
Add Disk Usage class to better handle excluded folders (e.g. Google Music cache)
Add 4.4 decrypt support
Add some toolbox utilities to TWRP (namely to support SELinux functions not supported in busybox)
Various SELinux fixes and bug fixes
Note: 2.7 marks the first time that we are dropping support for older devices. We are doing this because of the SELinux support needed to install 4.4 Kit Kat ROMs. The non-TWRP parts of the recovery image have to be built in at least a 4.1 tree and the kernel that is included in the recovery image has to support writing SELinux contexts. We don't own most of the devices that we support so we depend on outside testers and developers to help us update devices. In many cases we can't find someone readily. Come to #twrp on Freenode if you want to help bring your device up to date. You can tell right away if your device will support 4.4 ROMs in 2.7. Boot TWRP and press the console button (the square-ish button either in the bottom middle or upper right) to view the console output. If it doesn't say "Full SELinux support" in the console, then your device still needs some work. Help us help you.

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Step 1. Make sure you’ve already downloaded the CWM or TWRP Recovery image, copy it to the root storage of your SD Card.

Step 2. On your phone, open Google Play Store, and install ‘Android Terminal Emulator‘.

Step 3. After the app is installed, run it on your phone.

Step 4. Now Type the Following commands, but make sure you replace the recoveryfilename.img, with the name of the recovery image file.

su
dd if=/sdcard/recoveryfilename.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
That’s it folks, this was all you need to know and learn in order to successfully gain root access and install CWM or TWRP Recovery.