Requirements.txt is needed for mybinder to install projectq and Qiskit.
Adjusted requirements.txt. Only projectq and qiskit dependencies without version numbers. When merged in master Mybinder will build the master branch against the latest version of qiskit/projectq.
Coverage remained the same at 100.0% when pulling ab64798d5d276ed87bc6a3ea9b969c858bc63c4b on feature/dem851/mybinder_revise into 0706253ad3a4cf1539a41ebb01c0d014219d95fa on dev.
Coverage remained the same at 100.0% when pulling 0f995b2edd7ee2f76ae27e9773f9f64f62c5ec72 on feature/dem851/mybinder_revise into eb41c55700d8b068ce51982a3394e4b2d94b58d7 on dev.