Create README.md

Signed-off-by: David Rotermund <54365609+davrot@users.noreply.github.com>

numpy/convert_into_ndarray/README.md

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+# Convert other data into numpy arrays e.g. asarray
+{:.no_toc}
+
+<nav markdown="1" class="toc-class">
+* TOC
+{:toc}
+</nav>
+
+## The goal
+
+
+
+Questions to [David Rotermund](mailto:davrot@uni-bremen.de)
+
+
+## [numpy.asarray](https://numpy.org/doc/stable/reference/generated/numpy.asarray.html)
+
+```python
+numpy.asarray(a, dtype=None, order=None, *, like=None)
+```
+
+> Convert the input to an array.
+
+
+
+
+## [numpy.fromiter](https://numpy.org/doc/stable/reference/generated/numpy.fromiter.html)
+
+{: .topic-optional}
+This is an optional topic!
+
+```python
+numpy.fromiter(iter, dtype, count=-1, *, like=None)
+```
+
+> Create a new 1-dimensional array from an iterable object.
+
+## [numpy.fromfunction](https://numpy.org/doc/stable/reference/generated/numpy.fromfunction.html)
+
+{: .topic-optional}
+This is an optional topic!
+
+```python
+numpy.fromfunction(function, shape, *, dtype=<class 'float'>, like=None, **kwargs)[source]
+```
+
+> Construct an array by executing a function over each coordinate.
+> 
+> The resulting array therefore has a value fn(x, y, z) at coordinate (x, y, z).
+
+
+
+## [numpy.array](https://numpy.org/doc/stable/reference/generated/numpy.array.html)
+
+{: .topic-optional}
+This is an optional topic!
+
+Don't confuse **asarray** with **array**. **array** can be used to put a numpy structure around data. **asarray** converts the data into a numpy array. (As far as I understand...). Thus normally you don't need to touch **array**. 
+
+```python
+numpy.array(object, dtype=None, *, copy=True, order='K', subok=False, ndmin=0, like=None)
+```
+
+> Create an array.
+