Support CocoaPods

[dabing1022]

ProjectName：DemoTestProject

Steps

1. cd DemoTestProject
2. pod spec create DemoTestProject
3. vim DemoTestProject.podspec
4. modify podspec file

git add .
git commit -m `commit description`
git tag 0.0.1
git push --tags
git push origin master

6.pod spec lint DemoTestProject.podspec

if you have warnings and errors, please delete your tag and then retry.

git tag -d 0.0.1
git push origin :refs/tags/0.0.1

7.pod trunk push DemoTestProject.podspec

if this is your first time to commit to CocoaPods，please register first:

pod trunk register yourEmail@gmail.com 'write a name here' --description='write descrption here'