remain size to prvent MB residual reading overflow
add safety check for bit-reading for headers
minor fix readme
fix typo
Merge pull request #316 from licaiguo/fix-readme

Fix readme
enable x86 asm for android
Add iOS support for decoder.
Merge pull request #317 from licaiguo/enable-x86asm-android

enable x86 asm for android
Merge pull request #318 from zhilwang/add-ios-decoder

Add iOS support for decoder.
Simplify encoder interface--remove EncoderFrame2 from interface
function
Merge pull request #319 from ruil2/encoder_update

Simplify encoder interface--remove EncoderFrame2 function
Merge pull request #320 from huili2/mb_residual_size_check

remain size to prevent MB residual reading overflow
refine android build, add TARGET option to specify target in sdk
init the spatial last spatial picture if excption
update README
Merge pull request #323 from huili2/check_bit_read

add safety check for bit-reading for headers
add missed namespace for encoder, remove un-used file
Merge pull request #321 from licaiguo/add-android-target-option

Add android target option
Merge pull request #324 from volvet/add-missed-namespace-for-encoder

add missed namespace for encoder, remove un-used file
Squashed merge from writenal_refactor2