Init commit.

studies/timeline-trial/tdf.tsv

+Variable ID	Variable Name	Variable Accession Number	Trait	Trait Accession Number	Method	Method Accession Number	Method Description	Scale	Scale Accession Number	Scale Type	Scale Values
+PlntAlv_M_pcs	Plants alive		Plants alive		Plants alive - Measurment		Count the number of plants alive.	Plants alive scale		Numerical	
+FlwCol_E_1to3	Flower colour		Flower colour		Flower colour - Estimation		Observe the flower color and record it.	1-3 Flower color scale		Nominal	1:yellow;2:purple;3:white
\ No newline at end of file