Revert "添加《坛经》，《佛说净业障经》"

This reverts commit 42b135a52f93291c8ca08f0e4827d5a0907588fc.
Revert "Revert "添加《坛经》，《佛说净业障经》""

This reverts commit 59b2d005b095893f3ec0182f76286d340f2faedf.
添加《长阿含经》
Merge pull request #1 from bannyloop/master

合并《长阿含经》