fix typo pyimport->pyimport_conda (#818)

Author: hyrodium

README.md

@@ -600,7 +600,7 @@ Then you can access the `scipy.optimize` functions as `scipy_opt.newton`
 and so on.
 
 Here, instead of `pyimport`, we have used the function `pyimport_conda`.   The second argument is the name of the [Anaconda package](https://docs.continuum.io/anaconda/pkg-docs) that provides this module.   This way, if importing `scipy.optimize` fails because the user hasn't installed `scipy`, it will either (a) automatically install `scipy` and retry the `pyimport` if PyCall is configured to use the [Conda](https://github.com/Luthaf/Conda.jl) Python install (or
-any other Anaconda-based Python distro for which the user has installation privileges), or (b) throw an error explaining that `scipy` needs to be installed, and explain how to configure PyCall to use Conda so that it can be installed automatically.   More generally, you can call `pyimport(module, package, channel)` to specify an optional Anaconda "channel" for installing non-standard Anaconda packages.
+any other Anaconda-based Python distro for which the user has installation privileges), or (b) throw an error explaining that `scipy` needs to be installed, and explain how to configure PyCall to use Conda so that it can be installed automatically.   More generally, you can call `pyimport_conda(module, package, channel)` to specify an optional Anaconda "channel" for installing non-standard Anaconda packages.
 
 ## Python virtual environments