add book latex插图指南.pdf. md5: e737d7ee0f0267a6983bdb056f03d0bc
back and revert env files
add book [LATEX入门与提高].陈志杰.清晰版.pdf. md5: b84d38e6b044ce1dd2e4ebfb9f77fa7a
add book Effective C++中文版第三版 高清PDF.pdf. md5: fea72b65983a88741a0a71187a1c17aa
git running info