make links relative

README.md

@@ -193,7 +193,7 @@ trap1.evo_model = 'DUSTY00'
 trap1.infer_mass()
 ```
 
-<img src="https://github.com/bdnyc/sedkit/blob/master/sedkit/data/figures/Lbol_v_mass.png" height="400">
+<img src="sedkit/data/figures/Lbol_v_mass.png" height="400">
 
 A variety of atmospheric model grids can be fit to the data with or without MCMC analysis,
 
@@ -215,13 +215,13 @@ Inspect the SED at any time with the interactive plotting method.
 trap1.plot(integral=True, best_fit=True)
 ```
 
-<img src="https://github.com/bdnyc/sedkit/blob/master/sedkit/data/figures/sed_plot.png" height="500">
+<img src="sedkit/data/figures/sed_plot.png" height="500">
 
 References for all data can be accessed via the `refs` attribute.
 
 Entire catalogs of `SED` objects can also be created and their properties can be arbitrarily compared and analyzed with the `sedkit.catalog.Catalog()` object.
 
-<img src="https://github.com/bdnyc/sedkit/blob/master/sedkit/data/figures/Lbol_v_SpT.png" height="500">
+<img src="sedkit/data/figures/Lbol_v_SpT.png" height="500">
 
 Please read the full documentation for details on this functionality and much more.
 
@@ -231,6 +231,6 @@ Full documentation for the latest build can be found on [ReadTheDocs](https://se
 
 The package also contains detailed Jupyter notebooks highlighting the core functionality of its primary classes, including
 
-- [sedkit.spectrum.Spectrum](https://github.com/bdnyc/sedkit/blob/master/sedkit/notebooks/working_with_spectra.ipynb)
-- [sedkit.sed.SED](https://github.com/bdnyc/sedkit/blob/master/sedkit/notebooks/create_sed.ipynb)
-- [sedkit.catalog.Catalog](https://github.com/bdnyc/sedkit/blob/master/sedkit/notebooks/create_catalog.ipynb)
+- [sedkit.spectrum.Spectrum](sedkit/notebooks/working_with_spectra.ipynb)
+- [sedkit.sed.SED](sedkit/notebooks/create_sed.ipynb)
+- [sedkit.catalog.Catalog](sedkit/notebooks/create_catalog.ipynb)